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TRUNG TÂM VẬT LÝ LÝ THUYẾT – VIỆN VẬT LÝHỘI VẬT LÝ VIỆT NAMCHỦ TỊCH HỘI NGHỊNguyễn Ái Việt (VVL)BAN TỔ CHỨCNguyễn Hồng Quang (VVL), Trưởng banHoàng Dũng (ĐHQG HCM), Phó Trưởng banBạch Thành Công (ĐHKHTN HN)Phó Nguyệt Hằng (ĐHBK HN)Lê Văn Hoàng (ĐHSP HCM)Đinh Xuân Khoa (ĐHSP Vinh)Nguyễn Anh Kỳ (VVL)Nguyễn Huỳnh Phán (ĐHQB Đồng Hới)Trần Công Phong (ĐHSP Huế)Đặng Văn Soa (ĐHSP HN)BAN CHƯƠNG TRÌNHNguyễn Văn Liễn (VVL), Trưởng banNguyễn Bá Ân (VVL)Vũ Văn Hùng (ĐHSP HN)Nguyễn Quốc Khánh (ĐHKHTN HCM)Hoàng Ngọc Long (VVL)Đỗ Hoàng Sơn (ĐHQG HCM)Vũ Ngọc Tước (BHBK HN)BAN TỔ CHỨC ĐỊA PHƯƠNGNguyễn Huỳnh Phán (ĐHQB Đồng Hới)Võ Thị Dung (ĐHQB Đồng Hới)Nguyễn Đình Hùng (ĐHQB Đồng Hới)Trần Ngọc (ĐHQB Đồng Hới)Bùi Khắc Sơn (ĐHQB Đồng Hới)Lê Thị Hoài Thu (ĐHQB Đồng Hới)BAN THƯ KÝPhùng Văn Đồng (VVL), Trưởng banĐào Thị Hồng (VVL)Phạm Thị Lan Phương (ĐHQB Đồng Hới)Đặng Thị Hoàng Yến (ĐHQB Đồng Hới)CÁC ĐƠN VỊ TÀI TRỢViện Khoa học và Công nghệ Việt NamTrung tâm Vật lý lý thuyết, Viện Vật lý Hà NộiĐại học Quảng BìnhViện Vật lý Kỹ thuật Hà NộiBan Ứng dụng Triển khai công nghệ Đại học Khoahọc Tự nhiên Hồ Chí MinhTrường Đại học Sư phạm Tp. Hồ Chí MinhThành phố Đồng Hới (03- 06/8/2009) Trang 1/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 2/ 102

HỘI NGHỊ VẬT LÝ LÝ THUYẾT TOÀN QUỐC LẦN THỨ 34(Thành phố Đồng Hới, 03 – 06/ 08/2009)Thứ Hai, ngày 03 tháng 08 năm 2009BUỔI SÁNG:08h00 – 09h00:09h00 – 09h30:Đăng ký đại biểuKhai mạcChủ tọa: Nguyễn Hồng QuangNguyễn Văn Hiệu, Perspective Topics in Physics ofQuantum Information. Báo cáo mờiCHƯƠNG TRÌNH HỘI NGHỊ10h00 – 10h30:10h30 - 11h30:Nghỉ giữa buổiPhần trình bày báo cáo miệngMỗi báo cáo trình bày 20’Chủ tọa: Bạch Thành CôngLê Tuấn, Nguyễn Thành Tiên, Trần Thị An, Đoàn NhậtQuang, Electron Scatterings Due To The ChargeFluctuations In Roughened O-Polar Face Of ZnOSurface Quantum WellsNguyễn Duy Vỹ, Cao Huy Thiện, Trần Thoại Duy Bảo,Coherence Kinetics of Condensed MicrocavityPolaritonsNguyễn Hải Sơn, Spectroscopy of an InAs/GaAs singlequantum dot in a crystal photonic cavityThành phố Đồng Hới (03- 06/8/2009) Trang 3/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 4/ 102

BUỔI CHIỀU:14h00 – 15h10:Chủ tọa: Nguyễn Viễn ThọPhần trình bày báo cáo miệngBáo cáo mời 30’, các báo cáo khác 20’Phùng Văn Đồng, Hoàng Ngọc Long, Đặng Văn Soa,Nguyễn Huy Thảo, Warped Spacetime: Consequencesand SignaturesPhạm Quang Hưng, Nguyễn Như Lê, The ProductionAnd Decays Of Mirror Charged Leptons AndElectroweak-Scale Right-Handed NeutrinosNguyễn Tuấn Anh, Đinh Thanh Tâm, Đỗ Hữu Nha, TheFour-Quark Coupling Bag Model for Nuclear Matter15h10 – 16h00:cáo treo (I)Chủ tọa: Đặng Văn SoaNghỉ giữa buổi và Phần trình bày báo[P - 1] Lê Thọ Huệ, Hà Thanh Hùng, Hoàng Ngọc Long,Nguyễn Huy Thảo, Đinh Phan Khôi, Symmetry Factor ofFeynman Diagrams[P - 2] Võ Văn Ớn, Magneto- Gravitational Field in theVector Model for Gravitational Field[P - 3] Nguyễn Hùng Sơn, Tomographic ProbabilityRepresentation of Quantum Field[P - 4] Lưu Thị Kim Thanh, Dương Đại Phương, FermiOscillator as a q - Deformed Bose Oscillator[P - 5] Nguyễn Văn Thuận, Specific Solutions In SU(2)Gauge Field Couples To Massless Scalar Field[P - 6] Nguyễn Thị Hà Loan, Đỗ Thị Thu Thủy, Vũ QuốcHùng, The deformed crystal lattice vibration of kinddifference atomic string and statistics of this vibration.[P - 7] Nguyễn Minh Tuấn, Koval. T.V, Khảo Sát TrạngThái Tĩnh Của Chùm Electron Trong Đi-ốt Và TrongKhông Gian Trôi[P - 8] Nguyễn Trí Lân, Hatree – Fock – BogoliubovApproximation in Functional Integral Formalism[P - 9] Dương Xuân Long, Hoàng Ngọc Cầm, Thecomplex states of many-particle correlations in quasi -two-dimentional semiconductor nanostructures[P - 10] Nguyễn Viết Minh, Piezoelectric Effect on theElectron Mobility in an Unintentionally DopedGaN/AlGaN Surface Quantum Well[P – 11] Trần Văn Quảng, Phạm Thị Thanh Nga, NguyễnToàn Thắng, Some Thermal Properties of theFermionized Heisenberg Antiferromagnet on theTriangular LatticeThành phố Đồng Hới (03- 06/8/2009) Trang 5/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 6/ 102

[P - 12] Nguyễn Văn Nghĩa, Nguyễn Vũ Nhân, NguyễnQuang Báu, The Acoustomagnetoelectric Effect inQuantum Wires[P - 13] Hoàng Văn Ngọc, Nguyễn Đình Dũng, TotalDiffraction Reflection of Polarized Neutrons by CrystalSurface With Polarized Nucleus, Placed in PeriodicalVariable Magnetic Field[P - 14] Nguyễn Thị Thùy Nhung, Lê Thanh Tùng,Nguyễn Đức Giang, Ngô Văn Thanh, Nguyễn Ái Việt,Combined studies of cell response to electric pulses: Asimple approach[P - 15] Huỳnh Vĩnh Phúc, Lê Thị Thu Phương, TrầnCông Phong, Calculation Of The Optical AbsorptionPower In Rectangular Quantum Wire By Using State-Independent Projection Technique[P - 16] Lê Thị Thu Phương, Huỳnh Vĩnh Phúc, Lê Đình,Trần Công Phong, Nonlinear Optical Absorption ofIntensity Terahertz Radiation by Confined Electrons inCylindrical Quantum Wires[P - 17] Ngô Thị Thu Phương, Nguyễn Thị Thương, NgôVăn Thanh, Nguyễn Ái Việt, Secondary electronsproduction in the ionization of tissue by ion beams andtheir DNA-damage[P - 18] Nguyễn Minh Thảo, Nguyễn Hồng Quang,Nghiên cứu năng lượng tương quan đối với exciton tíchđiện trong chấm lượng tử 2 chiều[P - 19] Lê Nguyễn Minh Thông, Cao Huy Thiện,Polariton Parametric Amplification in SemiconductorMicrocavity Investigated with a Boltzmann Approach[P - 20] Nguyễn Thị Thương, Ngô Thị Thu Phương, NgôVăn Thanh, Nguyễn Ái Việt, Model of SubdiffusionWithin Flavin Reductase Protein with Morse Potential[P - 21] Vũ Văn Hùng, Nguyễn Thị Thu Hiền, Study ofElastuc Moduli of Interstitial Alloys by StatisticalMoment Mothed: Temperature Dependence[P - 22] Vũ Văn Hùng, Phan Thị Thanh Hồng, NguyễnThanh Hải, Influence of Temperature on Self Diffusionin GaAs Crystal[P - 23] Vũ Văn Hùng, Nguyễn Quang Học, Đinh QuangVinh, Thermodynamic Property of Some QuantumCrystals under Pressure[P - 24] Thái Thị Minh Nguyệt, Vũ Ngọc Sáu, Nguyễn HuyBằng, Optical Soliton Propagation in Single Mode OpticalFibers in The Presence of Stimulated Raman Scattering[P -25] Nguyễn Văn Phú, Đinh Văn Hoàng, InvestigationOf Wavelength Shifting In The DFB Laser With TwoSections By Using Injection Current I2 Into SaturableAbsorber Section[P - 26] Mai Văn Lưu, Hồ Quang Quý, Vũ Ngọc Sáu,Matching of Pump and Mode volumes inside Laser Diodesside-pumped Laser RodThành phố Đồng Hới (03- 06/8/2009) Trang 7/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 8/ 102

[P - 27] Vũ Ngọc Sáu, B. Brzostowski, Cao Long Vân,Đinh Xuân Khoa, B. Grabiec, Four-level Model For EITof Cold 85^Rb[P - 28] Hồ Công Sơn, Quantum Dynamics of Spin-Qubits in a Spin-Star Environment[P - 29] Thái Doãn Thanh, Lê Văn Nam, Nguyễn HuyCông, Quantum interference effects in resonancefluorescence spectra of Y- type four – level atom[P - 30] Thái Doãn Thanh, Lê Văn Nam, Nguyễn HuyCông, The resonance fluorescence of a three-level atomin the presence of a squeezed broad-band vacuum andquantum interference16h00 – 17h00:Chủ tọa: Hoàng Ngọc LongPhần trình bày báo cáo miệngMỗi báo cáo trình bày 20’Nguyễn Suân Hãn, Huỳnh Văn Trung, Lê Hải Yến,Glauber Type Representation for the ScatteringAmplitude of High-Energy Dirac Particles on theSmooth Gravitational PotentialNguyễn Viễn Thọ, Nguyễn Quốc Hoàn, On the Yang-Mills GravityNguyễn Chí Linh, Đỗ Hoàng Sơn, Tán Xạ gg →bb H TạiLHC: Bài Toán Gần Đúng Born.[P - 31] Trịnh Văn Mùng, Hoàng Quốc Hoàn, Phạm KhắcHùng, Computer Simulation Of Interstitial Diffusion InDisordered Systems[P - 32] Phan Thị Cẩm Nhung, Nguyễn Ngọc Ty, LêVăn Hoàng, High Harmonic Generation Spectra ofBasic Bases of DNA Interacting with Ultra-ShortLaser Pulses[P - 33] Phan Hoàng Chương, Cấu Trúc Hình Học GiảĐịnh Của Các Boson[P - 34] Nguyễn Ngọc Ty, Tăng Thị Bích Vân, Lê VănHoàng, Tracking Acetylene/Vinylidene IsomerizationProcess by Ultrashort Laser Pulses using HighHarmonic GenerationThành phố Đồng Hới (03- 06/8/2009) Trang 9/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 10/ 102

Thứ Ba, ngày 04 tháng 08 năm 2009 10h30 – 11h30: Phần trình bày báo cáo miệngBUỔI SÁNG:08h30 – 10h00:Chủ toạ: Nguyễn Toàn ThắngPhần trình bày báo cáo miệngBáo cáo mời 30’, các báo cáo khác 20’Lê Văn Hoàng, Molecular Imaging with Ultra-ShortLaser Pulses Using High Harmonic Generation, Báocáo mờiPiereJouy, Electroluminescence from intersubbandcavity polariton states in the mid-infrared domainVũ Văn Hùng, Hồ Khắc Hiếu, Nguyễn Văn Hùng, ThePressure Dependence of EXAFS Debye-Waller Factorsin CrystalsLê Thế Vinh, Nguyễn Minh Quân, Dương Công Hiệp,Nguyễn Thành Tín, Nguyễn Tất Đạt, Đổng Quốc Việt,Computer Simulation of Microstructure in DisorderedSystemsChủ tọa: Nguyễn Bá ÂnMỗi báo cáo trình bày 20’Margarita A. Man'ko, New Entropic Bounds inQuantum Information ProcessingĐinh Xuân Khoa, Cao Long Vân, Vũ Ngọc Sáu, NguyễnHuy Bằng, Five-level Model For Cascade Scheme of EITIn Cold 85Rb AtomsLê Thị Hà Linh, Explicit Construction of Cluster States ofSystems of Two and Three Spin-QubitsBUỔI CHIỀU:14h00 – 15h20:Chủ tọa: Nguyễn Quang BáuPhần trình bày báo cáo miệngMỗi báo cáo trình bày 20’Vũ Ngọc Tước, Nguyễn Viêt Minh, First Principle Studyon AlN Nano Wire10h00 – 10h30:Nghỉ giữa buổiBenedict O’ Donnell, Improved light trapping in siliconnanowire solar cellsNguyễn Anh Tuấn, Shin - Inchi Katayama, Dam HieuChi, Density - Functional Study of Magneto - StructuralCorrelation in Mn4 Molecules: A way to develop Single- Modecule MagnetsThành phố Đồng Hới (03- 06/8/2009) Trang 11/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 12/ 102

Hoàng Đình Tiến, Ngô Văn Thanh, Nguyễn Ái Việt, Isingspin glass on a FCC lattice: a Monte-Carlo simulation14h20 – 16h10: Nghỉ giữa buổi và Phần trình bày báo cáotreo (II)Chủ tọa: Đỗ Hoàng Sơn[P - 35] Nguyễn Ngọc Ty, Lê Văn Hoàng, GeneticAlgorithm and Retrieval of Interatomic Separations ofthe Complex Molecules by Ultrashort Laser Pulses[P - 36] Phan Hoàng Chương, Nguyên Lý Bất Định LàHệ Quả Của Chuyển Động Hỗn Độn[P - 37] Phan Hoàng Chương, Nghiệm Của PhươngTrình Schrodinger Của Vi Hạt Chuyển Động NgẫuNhiên Trong Trường Thế[P - 38] Nguyễn Chính Cương, Squarks decays into quarkand gluinos in the MSSM[P - 39] Hà Huy Bằng, Nguyễn Thị Thu Hương, TheProduction of Gluino Pairs in High Energy e+e-Collision within The MSSM with Complex Parameters[P - 40] Nguyễn Công Kiên, Nguyễn Anh Kỳ, Q-bosonfermionRealizations of Some Quantum Superalgebrasin Coherent State basis[P - 41] Nguyễn Thị Hà Loan, Đinh Xuân Cấp, Đinh VănTình, q- Deformed crystal lattice vibration of genericatomic string[P - 42] Phan Đức Anh, Quách Khả Quang, Trần ThanhThúy, Vũ Thúy Hường, Ngô Văn Thanh, Nguyễn Ái Việt,Van Der Waals and Casimir Interactions of someGraphene, Carbon Nanotube and NanoparticaleSystems[P - 43] Trần Ngọc Bích, Trần Phan Thùy Linh, TrươngThị Hồng Nhung, Trần Công Phong, Comparision ofTwo Techniques in Theory of Phonon-inducedCyclotron Resonance Linewidths for Quantum Wells[P - 44] Phó Thị Nguyệt Hằng, Phạm Thùy Dung,Nguyễn Hữu Hải, The Reflection and Transmission ofthe Electromagnetic Wave in Multilayers StructuresComposed from Cholesteric Liquid Crystals[P - 45] Phan Thị Kim Loan, Nguyễn Hải Châu, TrầnNguyên Dũng, Resistance and shot noise of Graphene n– p – n junctions[P - 46] Trần Thị Hải, Nguyễn Trung Hồng, NguyễnHuyền Tụng, Đoàn Nhật Quang, The Channel-WidthDependence Of The Low-Temperature Hole MobilityIn Ge-rich Narrow Square Quantum Well Studied bythe Band-bending Method[P - 47] Lê Đình, Nguyễn Đình Hiên, Lê Văn Hưng, TrầnCông Phong, Electron-Phonon Resonance and AbsorptionLine-widths in Quantum WiresThành phố Đồng Hới (03- 06/8/2009) Trang 13/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 14/ 102

[P - 48] Nguyễn Quang Báu, Nguyễn Văn Hiếu, NguyễnThị Thúy, Trần Công Phong, The NonlinearAcoustoelectric Effect in a Superlattice[P - 49] Lê Văn Hoàng, Phan Ngọc Hưng, Nguyễn Lê Đăng,Generalization of the Dirac and Yang Monopoles to a 9-Dimensional Space – a Non-Abelian SO(8) Monopole[P - 50] Bùi Đình Hợi, Trần Công Phong, Võ Thành Lâm,Magneto-phonon Resonance in Quantum Wells withParabolic Potential[P - 51] Lê Thái Hưng, Nguyễn Đức Thắng, Nguyễn ThịHà Thu, Nguyễn Vũ Nhân, Nguyễn Quang Báu, TheEffect of Confined Phonons on the NonlinearAbsorption Coefficient of a Strong ElectromagneticWave by Confined Electrons in CompositionalSuperlattices and Doped Superlattices[P - 52] Vũ Thúy Hường, Quách Khả Quang, Trần ThanhThúy, Phan Đức Anh, Ngô Văn Thanh, Nguyễn Ái Việt,pH-Dependence of the Optical Bio-Sensor Based onDNA - Carbon Nanotube[P - 53] Võ Thành Lâm, Trần Công Phong, Bùi Đình Hợi,Magneton-Phonon Resonance Line-width in QuantumWells[P - 54] Vũ Văn Hùng, Đặng Thanh Hải, Hoàng Văn Tích,Study of Structural Phase Transformation and MeltingTemperature of Metals: Pressure Dependence[P - 55] Vũ Văn Hùng, Nguyễn Thị Hằng, Cao HuyPhương, Study of Thermodynamic properties and selfdiffusionof AuCu Superlattice[P - 56] Nguyễn Huy Bằng, Đinh Xuân Khoa, Lê CảnhTrung, Trần Mạnh Cường, Accurate Potential EnergyCurve for The 31П State of NaLi Molecule[P - 57] Trương Minh Đức, Hoàng Phương Hà, NewEntanglement Criterion For Two-Mode States[P - 58] Nguyễn Văn Hóa, Hồ Quang Quý, Nguyễn ThịThanh Tâm, Vũ Ngọc Sáu, Transmittance Function Of TwoportsNolinear Fiber Mach-Zehnder Interferometer[P - 59] Nguyễn Bá Ân, Trần Thái Hòa, Generation offree-travelling four-mode cluster-type entangledcoherent states[P – 60] Trương Minh Đức, Nguyễn Thị Xuân Hoài,Entanglement Criterion for Bipartite Quantum States:Application[P - 61] Nguyễn Văn Hợp, Density matrix of stronglycoupled quantum dot microcavity system[P - 62] Trương Minh Đức, Trần Lê Hưng, Higher-Order Squeezing and Antibunching of SUq(1,1) q-Coherent States[P - 63] Lê Hoàng Anh, Đỗ Phương Liên, Investigation ofThermodynamic Properties of Liquid Transition MetalsThành phố Đồng Hới (03- 06/8/2009) Trang 15/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 16/ 102

[P - 64] Lê Hoàng Anh, Đỗ Phương Liên, Investigation ofStructural and Electronic Propertiesof Liquid TransitionMetals and Their Alloys[P - 65] Nguyễn Phương Duy Anh, Nguyễn Văn Hòa, LêVăn Hoàng, The Operator Method for non-PerturbationCalculations of Hydrogen Spectra in a Magnetic Fieldof Arbitrary Strength[P - 66] Nguyễn Tiến Cường, Nguyễn Anh Tuấn, Đỗ VănThanh, Nguyễn Hoàng Linh, Nguyễn Thùy Trang, PhạmHương Thảo, Bạch Thành Công, Density-FunctionalStudy of Jahn-Teller Effect in BaTiO3[P - 67] Phạm Hữu Kiên, Vũ Văn Hùng, Phạm KhắcHùng, Vương Thị Thúy, ComputerSimulation On LocalStructure And Diffusion In System Li2O-SiO2Từ 16h10 đến 18h10: Gặp gỡ Đồng Hới 2009Chủ tọa: Nguyễn Văn Liễn1. Ban tổ chức địa phương, Quảng Bình: Conngười, lịch sử và văn hóa2. Nguyễn Văn Hiệu, Kỷ niệm 100 năm ngày sinhViện sĩ Nikolai Nikolaevich Bogoliubov21/8/1909-21/8/2009.19h00 : Liên hoan thân mậtThứ Tư, ngày 05 tháng 08 năm 2009BUỔI SÁNG:08h30 – 10h00:Chủ tọa: Vũ Văn HùngPhần trình bày báo cáo miệngBáo cáo mời 30’, các báo cáo khác 20’Vladimir I. Man'ko, Quantum Information and ProbabilityDescription of Quantum States. Báo cáo mờiBạch Thành Công, Phạm Hương Thảo, Nguyễn TiếnCường, Theory For Magnetic Orders in Thin FilmsPhạm Công Huy, Nguyễn Hải Châu, Electronic bandstructure of Graphene SuperlatticesTrần Thị Hải, Nguyễn Trung Hồng, Nguyễn HuyềnTụng, Đoàn Nhật Quang, Mobility Enhancement InSquare Quantum well: Symmetric Modulation ofEnvelop Wave Function10h00 – 10h30:10h30 – 11h30:Chủ tọa: Vũ Ngọc TướcNghỉ giữa buổiPhần trình bày báo cáo miệngMỗi báo cáo trình bày 20’Hoàng Đình Triển, Nguyễn Quang Báu, The NonlinearAbsorption Coefficient of a Strong ElectromagneticThành phố Đồng Hới (03- 06/8/2009) Trang 17/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 18/ 102

Wave by Confined Electrons in Cylindrical QuantumWires with Parabolic PotentialTrần Công Phong, Nguyễn Thị Lệ Thủy, Võ Thành Lâm,Lương Văn Tùng, Optical Transition Linewidths due toPiezoelectric Phonon Scattering in DopedSemiconductor SuperlatticesNguyễn Như Đạt, Lo-Phonon-Limited Electron Mobilityin a Polar Semiconductor Quantum WireBUỔI CHIỀU:Chủ tọa: Hoàng DũngVõ Văn Thuận, Hoàng Văn Khanh, Search for High EnergySkimming Neutrinos at a Surface Detector ArrayĐặng Văn Soa, Hoàng Ngọc Long, Phùng Văn Đồng, T.H. Thao, Trịnh Thị Hương, Gauge – Higgs Unificationon Orbifold.16h10: Bế mạc hội nghịHọp Hội Vật lý Lý thuyết14h00 – 15h10:Phần trình bày báo cáo miệngBáo cáo mời 30’, các báo cáo khác 20’Chủ tọa: Hoàng DũngChủ tọa: Nguyễn Suân HãnTruong Nguyen Tran, Effective Range Theory of Bethe-Landau-Schwinger and Chiral Perturbation Theory ofWeinberg. Báo cáo mời.Phan Hồng Liên, One Loop Free Energy Density forBackground Fields Gauge at Finite TemperatureThứ Năm, ngày 06 tháng 08 năm 2009Thăm quan Động Phong Nha - Kẻ Bàng cả ngàyTrần Hữu Phát, Lê Viết Hòa, Nguyễn Tuấn Anh, NguyễnVăn Long, Phase Transition in Binary Mixture of BoseGases15h10 – 15h30:15h30 – 16h10:Nghỉ giữa buổiPhần trình bày báo cáo miệngMỗi báo cáo trình bày 20’Thành phố Đồng Hới (03- 06/8/2009) Trang 19/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 20/ 102

HỘI NGHỊ VẬT LÝ LÝ THUYẾT TOÀN QUỐC LẦN THỨ 34(Thành phố Đồng Hới, 03 – 06/ 08/2009)I. VẬT LÝ NĂNG LƯỢNG CAO, HẠT CƠ BẢN, HẠTNHÂN, THIÊN VĂNTÓM TẮT BÁO CÁO1. Effective Range Theory of Bethe-Landau-Schwinger and Chiral Perturbation Theory ofWeinbergTruong Nguyen TranIt is emphasized that the effective range theory of Bethe-Landau-Schwinger, derived from a potential picture andthe Schrodinger equation, is equivalent to therequirement of the conservation ofprobability(unitarity)at low energy. Although thisconcept was applied to the low energy physics in the 50'sand 60's and was correctly applied to of Chiral Theoriesby Lehmann later, it was completely ignored byWeinberg and his followers in their perturbativeapproach to chiral perturbation theories. In this talk Ishall show that a coherent approach to the low energyphenomena must be based on the requirement of Bethe-Landau-SchwingerNgười trình bày: Truong Nguyen Tran2. Warped Spacetime: Consequences andSignaturesPhùng Văn Đồng, Hoàng Ngọc Long, Đặng VănSoa, Nguyễn Huy ThảoThành phố Đồng Hới (03- 06/8/2009) Trang 21/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 22/ 102

In this talk, we give an introduction of Randall-Sundrum model based on five-dimensional warpedspacetime. This model can explain the hierarchy problembetween weak scale and gravity scale, in different to largeextradimension and supersymmetry. We also presentconsequences and KK signatures when bulk gaugebosons and fermions. A sketch of black hole generation atLHC and flavor problem in the model is also given.Người trình bày: Phùng Văn Đồng3. Glauber Type Representation for theScattering Amplitude of High-Energy DiracParticles on the Smooth Gravitational PotentialNguyễn Suân Hãn, Huỳnh Văn Trung, Lê Hải YếnBy the functional integration method the deduction ofthe eikonal representation for scattering amplitude ofthe Dirac particles on the smooth gravitationalpotential is performed . This method generalizing theusual operation of taking the square of the Diracequation is proposed for obtaining the functionalintegral representation of the amplitude. It has shownthat taking into account of spin of particles leads tonew term which is responsible for the spin flip in thescattering processes.Người trình bày: Nguyên Suân Hãn4. One Loop Free Energy Density for BackgroundFields Gauge at Finite TemperaturePhan Hồng LiênThe effective action and background field method have been appliedto investigate free energy density for non-Abelian gauge theory atfinite temperature, in which quantum corrections are included andcertain symmetries of generating functional are restored.Renormalization is also considered. We give result for the one freeenergy of gauge theory at high temperature and non-zero chemicalpotential, correcting a result previously at zero temperature anddensity.Người trình bày: Phan Hồng Liên5. Tán Xạ gg →bb H Tại LHC: Bài Toán Gần Đúng BornNguyễn Chí Linh, Đỗ Hoàng SơnTrong khuôn khổ tán xạ proton-proton sinh bb H tại LHC,chúng tôi khảo sát tiết diện tán xạ gg → bb H tại gần đúngLO trong khuôn khổ của mô hình chuẩn. Sử dụng phươngpháp bình phương biên độ tán xạ, chúng tôi thu được sựphụ thuộc của tiết diện tán xạ vào khối lượng của hạtHiggs cũng như phân bố của tiết diện tán xạ theo xunglượng ngang và pseudo-rapidity của bottom quarks vàHiggs. Các kết quả mà chúng tôi thu được cho thấy Higgsđược sinh ra trong kênh gg → bb H phân bố tập chungquanh góc 270 và 1530 so với trục tán xạ và với xunglượng ngang khoảng 45 (GeV). Kết quả mà chúng tôi thuđược phù hợp với kết quả tính toán độc lập [1] sử dụngphương pháp Helicity amplitudeNgười trình bày: Nguyễn Chí Linh6. Gauge – Higgs Unification on OrbifoldĐặng Văn Soa, Hoàng Ngọc Long, Phùng VănĐồng, T. H. Thao, Trịnh Thị HươngThành phố Đồng Hới (03- 06/8/2009) Trang 23/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 24/ 102

In this talk, we introduce the unification of gauge fieldsand fundamental Higgs fields in higher-dimensionalgauge theories based on Orbifold. Hosotani mechanismat the fixed points of Orbifold is obtained. An explicitmodel with the gauge group SU(3) X U(1) onOrbifold is given in detail.Người trình bày: Đặng Văn Soa7. The Four-Quark Coupling Bag Model forNuclear MatterNguyễn Tuấn Anh, Đinh Thanh Tâm, Đỗ Hữu NhaA four-quark coupling model, based on quark degrees offreedom, with quarks coupled to their scalar and vectorcondensates is considered. The model describes nuclearmatter as non-overlapping nucleon bags bound by theself-consistent exchange of scalar and vector mesons,that produces a mechanism for saturation. We obtain anew expression of effective nucleon mass, whichdepends on the scalar density factor. The effects ofnucleon structure on nucleus is due to this factor.Người trình bày: Đinh Thanh Tâm8. On the Yang-Mills GravityNguyễn Viễn Thọ, Nguyễn Quốc HoànThe parallel between Yang-Mills theory and GeneralRelativity is an attractive topic that motivated a lot ofinteresting researchs. Various versions of the gauge theoryof gravity were proposed which provided a deepunderstanding of such basis concepts as the geometry ofThành phố Đồng Hới (03- 06/8/2009) Trang 25/ 102space-time, the connection between symmetry anddynamics. In this work we consider the problem ofinteraction between intrinsic degrees of freedom ofparticles with the Lorentz gauge field solution that has thesame singular feature as for the Schwarzchild solution ofGeneral Relativity. The radial free-fall of particles towarda central mass, the possibility of planar motions, and theperihelion advance are examined in comparison with thegeodetic motion in the Schwarzchild space-time andastrophysical data. The results can be considered as anexperimental evidence for the existence of “internalLorentz symmetry” of point particles that is analogue tointernal unitary symmetries.Người trình bày: Nguyễn Viễn Thọ9. Cấu Trúc Hình Học Giả Định Của Các BosonPhan Hoàng ChươngNếu xem các hạt cơ bản như các mặt (brame S) trongkhông gian 11 chiều. Giả định các Fermion là các mặtcầu và các boson là các mặt xuyến. Từ tính chất củamặt xuyến ta viết các phương trình cho các hạt có spin= 2, spin = 1 và spin = 0. Từ đó đưa ra một cách giảithích về bốn tương tác của vật chất và đưa ra một môhình tương tác của các hạt cơ bản.Người trình bày: Phan Hoàng Chương10. Nguyên Lý Bất Định Là Hệ Quả Của ChuyểnĐộng Hổn ĐộnPhan Hoàng ChươngThành phố Đồng Hới (03- 06/8/2009) Trang 26/ 102

Xét vi hạt chuyển động tự do, nghiệm của phươngtrình Schrodinger nếu tính đến chuyển động hổn độncủa vi hạt, ta kết hợp với phương trình khuyếch tánngẫu nhiên dạng Brown với tọa độ là biến Wiener. Sửdụng công cụ của giải tích ngẫu nhiên ta suy ra đượcdạng hàm sóng của chuyển độn tự do và thu được cácđại lượng ngẫu nhiên như động lượng, động năng ...Từ đây xét biểu thức của tác dụng ngẫu nhiên ta thuđược hệ thức bất định.Người trình bày: Phan Hoàng Chương11. Nghiệm Của Phương Trình Schrodinger Của Vi HạtChuyển Động Ngẫu Nhiên Trong Trường ThếPhan Hoàng ChươngXét vi hạt chuyển động trong trường thế V, khi tính đếnchuyển động hổn độn của vi hạt ta sử dụng các công cụcủa giải tích ngẫu nhiên như: khai triển Ito-Taylor, khaitriển Fourier-Hermit, .... Đặc biệt ta sử dụng đạo hàmhình thức theo biến Wiener để đưa ra một phương pháptìm nghiệm giải tích. Từ đây ta thu được nghiệm củaphương trình Schrodinger dưới dạng chuổi Hermit vàphân bố Wiener.Người trình bày: Phan Hoàng Chương12. Squarks decays into quark and gluinos in theMSSMNguyễn Chính CươngWe present a phenomenological study of squarks (stopand sbottom) decays into quarks (top and bottom) andgluinos in the Minimal Supersymmetric StandardThành phố Đồng Hới (03- 06/8/2009) Trang 27/ 102Model (MSSM). The formulae of the decay width andnumerical results are given. The one-loop vertexcorrection, wave-function correction andrenormalization of the bare couplings to the decay widthhave been caculated. We have found that the effect ofcomplex parameters At and Ab can be quite significantin a large region of the MSSM parameter space.Người trình bày: Nguyễn Chính Cương13. The Production of Gluino Pairs in High Energye+e- Collision within The MSSM with ComplexParametersHà Huy Bằng, Nguyễn Thị Thu HươngWe present a phenomenological study of gluino pairsproduction in e+e- annihilation in the MSSM withcomplex parameters Af, \mu . We find that the effect ofthe phases on the cross-section of gluinos productioncan be quite significant in a large region of the MSSMparameter space. This could have importantimplications for gluino searches and the MSSMparameter determination in future collider experiments.Người trình bày: Nguyễn Thị Thu Hương14. Q-boson-fermion Realizations of Some QuantumSuperalgebras in Coherent State basisNguyễn Công Kiên, Nguyễn Anh KỳFor the last several years, super coherent states (CS’s)have been used by some authors to constructrepresentations (boson-fermion realizations) of super-Thành phố Đồng Hới (03- 06/8/2009) Trang 28/ 102

algebras such as , , and . These investigations,however, have been made for only a few cases ofquantum superalgebras, e. g., . In this report themethod is applied to the quantum superalgebra . First,representations in the CS basis of the superalgebra , asan intermediate step, and then, representations in theCS basis of its quantum deformation , are constructed.Our results lead to a boson-fermion realization moregeneral than those obtained earlier by other authors. Weexpect that the present results will be useful ininvestigations of current super-algebras, quantumsuper-algebras, and conformal field theories.Người trình bày: Nguyễn Công Kiên15. The Production And Decays Of Mirror ChargedLeptons And Electroweak-Scale Right-HandedNeutrinosPhạm Quang Hưng, Nguyễn Như LêThe model of electroweak-scale right-handed neutrinomass based on the assumption of the existence of mirrorfermions leads to the Majorana mass of the right-handedneutrino being of the order of the electroweak scale orsmaller. In the present paper, the total decay width ofright-handed neutrinos and mirror charged leptons hasbeen calculated. Analytical expressions for the totaldecay width of those particles are obtained. Thenumerical results show that when masses of leptonsvary, the order of maximum value of decay width isO(10 GeV), i.e, those leptons can be detected inThành phố Đồng Hới (03- 06/8/2009) Trang 29/ 102colliders. The main signatures would be like-signdileptons with displaced vertices plus one or two W’s.Người trình bày: Nguyễn Như Lê16. q- Deformed crystal lattice vibration of genericatomic stringNguyễn Thị Hà Loan, Đinh Xuân Cấp, Đinh Văn TìnhWe construct a q - deformed crystal lattice vibration forgeneric atomic string and consider an energy spectrumof this vibration.Người trình bày: Nguyễn Thị Hà Loan17. Symmetry Factor of Feynman DiagramsLê Thọ Huệ, Hà Thanh Hùng, Hoàng Ngọc Long,Nguyễn Huy Thảo, Đinh Phan KhôiThe symmetry factor of Feynman diagrams for real andcomplex scalar fields is presented. Being analysis ofWick expansion for Green functions, the mentionedfactor in general form is derived. The symmetry factorcan be separated into two ones corresponding to that ofconnected and vacuum diagrams. The determination ofsymmetry factors for the vacuum diagrams is necessaryas they play a role in the effective action and phasetransitions in cosmology.Người trình bày: Hoàng Ngọc Long18. Magneto- Gravitational Field in the VectorModel for Gravitational FieldVõ Văn ỚnThành phố Đồng Hới (03- 06/8/2009) Trang 30/ 102

In this paper, we present the existence of magnetogravitationalfield in the vector model for gravitationalfield and its effects in the Solar system. The results arethe same with ones of Einstein ‘s theory in the firstorder of approximate and agree with experiments.Người trình bày: Võ Văn Ớn19. Tomographic Probability Representation ofQuantum FieldNguyễn Hùng SơnThe tomographic approach to quantum fields isdeveloped. Tomographic symbols of the field operatorsare introduced and their properties are studied. Relationto classical field theory is discussed.Người trình bày: Nguyễn Hùng Sơn20. Fermi Oscillator as a q - Deformed BoseOscillatorLưu Thị Kim Thah, Dương Đại PhươngWe consider a version of q-deformed harmonicoscillators. The matrix representations and theirstatistical distributions have been derived. From theseresults we recover the matrix representations of theFermi operators and Fermi- Dirac statictics as a specialcase of q-boson.Người trình bày: Lưu Thị Kim Thanh21. Specific Solutions In SU(2) Gauge FieldCouples To Massless Scalar FieldNguyễn Văn ThuậnFrom the study of an SU(2) gauge filed coupled to amassless scalar filed, when the spatial component of thegauge field equals zero, we have found solutions for thecorresponding Yang – Mills equations. Nonabelianelectric field of our solutions decreases r3, differ fromclassical electromagnetic formalism. This see that,SU(2) color charge of our solutions at source screened.The energy of the gauge and scalar field confiqurationsof our solutions is less than that of the correspondinggeneralized electromagnetic field configuration whenthe color charge (Công Thức)Người trình bày: Nguyễn Văn Thuận22. Search for High Energy Skimming Neutrinos ata Surface Detector ArrayVõ Văn Thuận, Hoàng Văn KhanhAlong with the charged extremely high energy cosmicrays (EHECRs), the Pierre Auger Observatory (PAO)is able to detect very high energy neutrinos and themost perspective channel is searching by the Cherenkovsurface detector array (SD) for skimming tau-neutrinosat energies from 0.2 to 20 EeV just below the region ofGreisen-Zatsepin-Kuzmin (GZK) cut-off [1]. Thisdetection window is available due to the specific decaysin flight of tau-leptons which produce very inclinedairshowers at low altitudes above the SD array. Anothercombined technique at PAO, the fluorescent detectortelescopes (FD), is much less effective for neutrinoThành phố Đồng Hới (03- 06/8/2009) Trang 31/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 32/ 102

detection [2]. In searching for additional detectionchannels including muon neutrinos, we consider thetransition effects of residual radiation of direct pairproduction and bremsstrahlung or photonuclearreaction induced by skimming heavy charged leptons ata Cherenkov SD array, such as the operating SouthernPAO or the future Auger Nord Project. An estimationapplied to a model spherical earth surface shows amoderate effect of inclined electromagnetic showers fortriggering neighbouring local Cherenkov SD stations.The covering effective energy range is below the GZKcut-off region. The accidental coincidences and othersources of systematic uncertainties are discussed andthe identification criteria are proposed. A furtherattempt for realistic detection of skimming neutrinosshould include detailed topographic conditions of agiven SD array. This study is funded by the MOST ofVietnam for 2008-2009.[1] J.Abraham et al., Pierre Auger Collaboration,Physiscal Review Letters, 100(2008)211101.[2] D.Gora, M.Roth, A.Tamburro, AstroparticlePhysics 26(2007)402.Người trình bày: Võ Văn Thuận23. The deformed crystal lattice vibration of kinddifference atomic string and statistics of thisvibration.Nguyễn Thị Hà Loan, Đỗ Thị Thu Thủy, VũQuốc HùngWe construct a q - deformed crystal lattice vibration forkind difference atomic string, consider an energyspectrum and a statistical distribution of this vibration.Người trình bày: Đỗ Thị Thu Thủy24. Khảo Sát Trạng Thái Tĩnh Của Chùm ElectronTrong Đi-ốt Và Trong Không Gian TrôiNguyễn Minh Tuấn, Koval. T.VTrong những năm gần đây quá trình phát sinh và lantruyền các chùm hạt mang điện cường độ cao được đặcbiệt quan tâm. Các dạng chùm hạt này được ứng dụngrộng rãi trong vật lý plasma, trong các phương pháptổng hợp gia tốc hạt, quá trình phát sinh sóng siêu caotần ... và trong cả những thiết bị công nghiệp, dândụng.Mục đích công việc là nghiên cứu trạng thái tĩnh củachùm hạt electron trong đi-ốt và trong không gian trôi,đồng thời xác định những ảnh hưởng của kích cỡ giớihạn của chùm hạt và của hệ lên mật độ dòng hạt.Nhiệm vụ công việc là thu nhận các phương trình lýthuyết xác định cường độ giới hạn của chùm hạt trongmiền trôi, trong đi-ốt dạng phẳng và dạng đồng trụ;đưa ra các phương trình mô tả chuyển động của cácelectron trong đi-ốt và trong miền trôi. Có một hạn chếlà các công thức lý thuyết chỉ thu được trong cáctrường hợp đặc biệt và chỉ dùng để tính gần đúng hayước lượng các giá trị cường độ dòng hạt. Trong bài nàychương trình Comsol Multiphysics sẽ được sử dụng đểtạo các mô hình trên máy tính cho phép tính toán chínhThành phố Đồng Hới (03- 06/8/2009) Trang 33/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 34/ 102

xác cường độ dòng hạt trong các hệ thống thực tế, đồngthời khảo sát sự ảnh hưởng của các kích thước của hệthống, sự ảnh hưởng của môi trường và vật liệu lên sựphân bố trường điện từ trong đi-ốt và trong miền trôi.Người trình bày: Nguyễn Minh TuấnII. VẬT LÝ CÁC MÔI TRƯỜNG ĐÔNG ĐẶC, HỆTHẤP CHIẾU, CẤU TRÚC NANO25. Molecular Imaging with Ultra-Short LaserPulses Using High Harmonic GenerationLê Văn HoàngWe review one of the hottest topics of Atto-secondPhysics in the last few years: How to image anatom/molecule by ultra-short intense lasers. Theinfrared lasers of durations of tens to sub-enfemtoseconds are available that gives a stronginstrument for molecular imaging. When anatom/molecule is exposed to an intense laser pulse, anon-linear effect occurs with the emission of high-orderharmonics (HHG). The last contain information on thestructure of the atom/molecule that can be extracted byusing invert procedures such as the tomographic one.Canadian group obtained first dynamic ‘photography’of N2 molecule in 2004 that generated a lot of interest ofscientists. We will report our theoretical investigationin this direction and some results about molecularimaging.Người trình bày: Lê Văn Hoàng26. The Nonlinear Absorption Coefficient of aStrong Electromagnetic Wave by ConfinedElectrons in Cylindrical Quantum Wires withParabolic PotentialHoàng Đình Triển, Nguyễn Quang BáuThành phố Đồng Hới (03- 06/8/2009) Trang 35/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 36/ 102

Analytic expressions for the nonlinear absorptioncoefficient of a strong electromagnetic wave by confinedelectrons in cylindrical quantum wires with parabolicpotential are calculated by using the quantum kineticequation for electrons in two cases: electron-opticalphonon scattering and electron-acoustic phononscattering. The dependence of the nonlinear absorptioncoefficient on the intensity E0 and frequency Ω of theexternal strong electromagnetic wave, the temperature Tof the system, the radius R of wire is obtained. Theanalytic expressions are numerically calculated anddiscussed for GaAs/GaAsAl quantum wires. The resultsare compared with those for the normal bulksemiconductors and quantum well to show the difference.Người trình bày: Nguyễn Quang Báu27. Lo-Phonon-Limited Electron Mobility in a PolarSemiconductor Quantum WireNguyễn Như ĐạtA macroscopic continuum model is used to study thelongitudinal optical phonons in a polar semiconductorquantum wire with circular cross section. The FröhlichHamiltonian describing the electron-phonon interaction isthen obtained and used to calculate the electron mobilitygoverned by confined LO phonons by means of thememory function approach, including the many-particleeffect in the RPA framework. The difference in thebackground dielectric constant of the wire and the barriermaterial is taken into account. Numerical calculations aregiven for a GaAs/GaAlAs quantum wire.Người trình bày: Nguyễn Như Đạt28. Mobility Enhancement In Square Quantum well:Symmetric Modulation of Envelop WaveFunctionTrần Thị Hải, Nguyễn Trung Hồng, NguyễnHuyền Tụng, Đoàn Nhật QuangWe present a theoretical study of the effects fromsymmetric modulation of the envelop wave function onquantum transport in square quantum well (QWs).Within the variational approach, we obtain analyticexpressions for the carrier distribution and theirscattering in double-side doped square QWs. Scatteringby surface roughness and misfit deformation potentialare found significantly weaker than those in thereference single-side doped sample. Thus, symmetricmodulation of the wave-function is proposed as anefficient method for mobility enhancement in squareQWs. The optimization of the conductivity is discussed.Our theory is successful in explaining the recentexperimental data about transport properties, e.g., themobility dependence on the channel width.Người trình bày: Trần Thị Hải29. Phase Transition in Binary Mixture of BoseGasesTrần Hữu Phát, Lê Viết Hòa, Nguyễn Tuấn Anh,Nguyễn Văn LongBased on the Cornwall-Jackiw-Tomboulis (CJT)effective action approach a theoretical formalism isestablished for studying the Bose-EinsteinThành phố Đồng Hới (03- 06/8/2009) Trang 37/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 38/ 102

condensation (BEC) in a binary mixture of Bose gases.The effective potential, which preserves the Goldstonetheorem, is found in the Hartree-Fock (HF)approximation. This quantity is then used to considerthe equation of state (EOS) and the phase transition ofthe system.Người trình bày: Lê Viết Hòa30. Electronic band structure of GrapheneSuperlatticesPhạm Công Huy, Nguyễn Hải ChâuElectronic band structure of graphene superlattices witha Kronig-Penney-like potential has been in detailsanalyzed. Using the T-matrix approach, we derived theexpression of energy as a function of the wavevector andstudied the dependence of the miniband structure on theother parameters. The anisotropic behaviors of masslessDirac fermions are investigated. The group velocity isanisotropically renormalized, while it is unchanged atall for states with wavevector in one direction but isreduced to zero in another. This implies several usefulapplications in nanoscale electronic devides. We alsoshowed that new Dirac points are generated anddemonstrated that the number of them is controlled bythe strength and period of potential which has dramaticconsequences on electronic properties of system.Người trình bày: Phạm Công Huy31. Electroluminescence from intersubband cavitypolariton states in the mid-infrared domain.Thành phố Đồng Hới (03- 06/8/2009) Trang 39/ 102PiereJouytrong coupling appears when photons are confined withan electronic transition of the same energy. In this regime,the energy diagram is strongly modified and replaced bypolariton states dispersion. We recently demonstratedElectric-field tunable electroluminescence fromintersubband transitions in a quantum well via the strongcoupling of the electronic transitions with an opticalcavity mode in the mid-infrared domain. The deviceconsists of a quantum cascade structure embedded in aplanar metal-dielectric microcavity where electrons can beresonantly injected at different energies, thanks to thepolariton dispersion curve. The electroluminescencetuning shows a strong far field angular dependence inaccordance with the conservation of the in-planemomentum. Our experiment illustrates that it is possibleto connect quantum optics and electronic transport insemiconductor heterostructuresNgười trình bày: Piere Jouy32. Improved light trapping in silicon nanowiresolar cellsBenedict O’ DonnellConcerns over the sustainability of our current methodsfor generating electricity are spurring the development ofphotovoltaic solar energy conversion. Most solar panelssold today are made from high purity crystalline silicon,making them expensive compared to conventional energysources. Over the past thirty years, research on thin-filmshas brought a new generation of photovoltaic cells, madeThành phố Đồng Hới (03- 06/8/2009) Trang 40/ 102

from abundant materials and compatible with economicmanufacturing processes, to commercial maturity.Although these devices are cheaper than their crystallinesilicon predecessors, they are usually also less efficient.In our research, we design nano-engineered materials thatwill improve energy conversion efficiencies while retainingthin-film manufacturing costs. We propose to boost thelight trapping within thin-film silicon solar cells byexploiting the adjustable aspect ratio of silicon nanowires.Batches of doped silicon nanowires are grown via plasmaenhanced VLS and coated in silicon so as to produce a PINjunction. The catalysts for the nanowire’s growth areproduced by reducing with a hydrogen plasma thetransparent conducting oxide layer on a standard PVindustry SnO2 substrate. By adapting the nanowires’length and thickness, we exert control over the cell’stexturing. This leads to promising light trapping effects,achieved in a single-pump down process.Working devices are reported with open circuit voltages ashigh as 0,80V. We present their I(V) characteristics andspectral response curves and discuss some of therecombination paths that may currently be limiting theperformance of these cells. We also explore furtheropportunities offered by silicon nanowires in terms ofdeveloping photovoltaics, including enhancing carriercollection and extending the absorption spectrum of thinfilm silicon solar cells.Người trình bày: Benedict O’Donnell33. Optical Transition Linewidths due toPiezoelectric Phonon Scattering in DopedSemiconductor SuperlatticesTrần Công Phong, Nguyễn Thị Lệ Thủy, VõThành Lâm, Lương Văn TùngUtilizing the optical transition formula derived by thestate-dependent projection method on the nonlinearresponse scheme, we obtain the optical transitionlinewidths for the electron system in dopedsemiconductor superlattices due to piezoelectric phononscattering. We find the dependence of the widths on thetemperature, the period of the superlattice, and thedoped concentration of the n-doping and p-doping layerin the respective layers. The present results for dopedsemiconductor superlattices are compared to those ofquantum wells.Người trình bày: Trần Công Phong34. Spectroscopy of an InAs/GaAs single quantumdot in a crystal photonic cavityNguyễn Hải SơnSemiconductor quantum dots are the artificialnanostructures where the electrons tri-dimensionconfinement produces a discreet energy spectrum as inthe atom systems. In consequence, a single quantum dotcan be considered a single photon emitter. Recenttechnology permits us to integrate a single quantum dotinto a high quality micro-cavity. This achievementThành phố Đồng Hới (03- 06/8/2009) Trang 41/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 42/ 102

ings back a classical picture of atomic physics: aphoton emitter in an electro-dynamic cavity.Our project target is to develop a single photon switchbased on “photon blockade” effect. We study thecoupling of an InAs/GaAs single quantum dot with aphotonic crystal membrane cavity. Thanks to a veryhigh quality factor and a small efficient volume of ourphotonic crystal cavity, a strong coupling can attend.This strong coupling leads to a quantum effect called“photon blockade” which is an optical analogy ofCoulomb blockade in metal or semiconductornanostructures at low temperature.Người trình bày: Nguyễn Hải Sơn35. Theory For Magnetic Orders in Thin FilmsBạch Thành Công, Phạm Hương Thảo, NguyễnTiến CườngExistence of long range magnetic orders in low dimensionsystems (thin films, quantum dots, quantum wires) hasattracted much attention of researchers at present time. Inthis research we calculated thermodynamic properties of amagnetic thin film using the Heisenberg localized spinmodel and functional integral method. It was shown that,the thermodynamic parameters of long range magneticorder like: magnetization, Curie temperature, susceptibility… strongly depend on the film thickness (the size of thesystem). These theoretical results are in good agreementwith recent experiment data given in literature.Người trình bày: Phạm Hương Thảo36. Electron Scatterings Due To The ChargeFluctuations In Roughened O-Polar Face OfZnO Surface Quantum WellsLê Tuấn, Nguyễn Thành Tiên, Trần Thị An,Đoàn Nhật QuangWe present a theoretical study of roughness-relatedscattering mechanisms for electrons in singleheterostructures, especialy in Gaussian-doped ZnOsurface quantum wells. We show that besides theconventional scatterings there must exist roughnessrelatedmechanisms of charge origin, which stem fromfluctuations in the donor density in the bulk ZnO andthose in the distribution of spontaneous polarizationcharges on the O-polar ZnO surface. The role ofspontaneous polarization is two-fold, as a confining sourcealong the quantization direction but also as a scatteringsource in the in-plane. The strength of the two chargeoriginscattering sources is found to be comparable withthe one of the standard one from fluctuations in the barrierposition. Comparison with the experimental results hasbeen made. The effect of the dielectric discontinuity on thescattering mechanisms is discussed.Người trình bày: Lê Tuấn37. Coherence Kinetics of Condensed MicrocavityPolaritonsNguyễn Duy Vỹ, Cao Huy Thiện, Trần ThoạiDuy BảoThành phố Đồng Hới (03- 06/8/2009) Trang 43/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 44/ 102

The second-order coherence of condensed microcavitypolaritons is studied within Boltzmann-Masterequations. Time evolution of g^2(0,t) in pulse excitedGaAs microcavity is calculated for an initially emptyground state. Our average value of (g^2(0)) versuspump intensity agrees qualitatively with the measuredaverage value in pulse excited GaAs microcavityobtained by Deng et al. (Science 298, 199 (2002) ).Người trình bày: Nguyễn Duy Vỹ38. Van Der Waals and Casimir Interactions ofsome Graphene, Carbon Nanotube andNanoparticale SystemsPhan Đức Anh, Quách Khả Quan, Trần Thanh Thúy,Vũ Thúy Hường, Ngô Văn Thanh, Nguyễn Ái ViệtThe Van der Waals and Casimir interactions betweengraphene and a material plate, graphene and graphene plate,graphene and an atom or molecule are studied by using theLifshitz theory. The reflection properties of electromagneticoscillations on graphene are governed by specific boundaryconditions imposed on the infinitely thin positively chargedplasma sheet, carrying a continuous fluid with some massand charge density. The obtained formulas are applied to thecases of a graphene interacting with Au nanoparticle, andgraphene plates. We calculated also the Casimir interactionbetween two carbon nanotubes, and a single wall carbonnanotube with Au plate. The comparison with other recentlyobtained theoretical results are mad, and a generalizations tomore complicated carbon nanostructures are discussed.Người trình bày: Phan Đức Anh39. Comparision of Two Techniques in Theory ofPhonon-induced Cyclotron ResonanceLinewidths for Quantum WellsTrần Ngọc Bích, Trần Phan Thùy Linh, TrươngThị Hồng Nhung, Trần Công PhongUsing two different projection operator techniques,which are the Isolation-Projection Technique and theState-Independent Projection Technique forinvestigating cyclotron resonance in quantum wells, weobtain the analytical expressions of absorption. Usingcomputational program we draw the graphs showingthe dependence of absorption powers on the amplitude ofmagnetic field for different temperature and well’sparameters. Then, line-widths are obtained as the profileof the curves of graphs. The results show that thesplittings of cyclotron resonant peaks in two projectionoperator techniques are equivalent for quantum wells.Người trình bày: Trần Ngọc Bích40. The Reflection and Transmission of theElectromagnetic Wave in Multilayers StructuresComposed from Cholesteric Liquid CrystalsPhó Thị Nguyệt Hằng, Phạm Thùy Dung,Nguyễn Hữu HảiThis paper deals with the problem of transmission forthe electromagnetic wave in cholesteric liquid crystals.In case of incident beam perpendicular to the surface ofthe cholesteric liquid crystal layer, the analyticalexpressions for the characteristic matrix of the layer hasThành phố Đồng Hới (03- 06/8/2009) Trang 45/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 46/ 102

een derived, by which the problems of reflection andtransmission for the electromagnetic wave inmultilayers structures composed from cholesteric liquidcrystals have been solved emphasising in the repeatedreflection on the space between layers. Further,dependence of the reflection spectrum on thepolarization of the incident beam are determined whenthe incident beam perpendicular to the surface ofmultilayers structures composed from fourteen layerswhich consists of consecutive one-by-one components,one from cholesteric liquid crystal layers, other fromdielectric layers. Moreover dependence of thepolarization of the reflection wave and the transmissionwave on wavelength are obtained when the incidentbeam is in quadrature with system of the cholestericliquid crystal putting on an isotropic dielectric layer.Người trình bày: Phạm Thùy Dung41. The Channel-Width Dependence Of The Low-Temperature Hole Mobility In Ge-rich NarrowSquare Quantum Well Studied by the BandbendingMethodTrần Thị Hải, Nguyễn Trung Hồng, NguyễnHuyền Tụng, Đoàn Nhật QuangWe employ the theory of band-bending effects to explainthe channel-width dependence of the mobility of a twodimentionalhole gas (2DHG) in narrow squareSi/Si¬1-xGex/Si quantum well at high Ge content. Thenumerical calculation of scattering mechnisms is shownin comparision with the one from the previousThành phố Đồng Hới (03- 06/8/2009) Trang 47/ 102computation. As a result. Our method enables a beterquantitative description of recently measured data aboutthe dependence of the 8 K mobility of holes in aSi/Si¬0.2Ge0.8/Si quantum well on the channel widthvarying from 25-70A.Người trình bày: Trần Thị Hải42. Electron-Phonon Resonance and AbsorptionLine-widths in Quantum WiresLê Đình, Nguyễn Đình Hiên, Lê Văn Hưng, TrầnCông PhongElectrophonon resonance (EPR) and optical detectedelectrophonon resonance (ODEPR) effects areinvestigated in rectangular and cylindrical quantumwires using the projection operator technique. Weobtain the analytical expressions and graphs ofabsorption power. From graphs of the absorption powerwe obtain linewidths as profile of curves. Byconsidering the dependence of shift of absorption peaksin the case of electron –phonon resonance on thefrequency of incident photon we determine theconditions of ODEPR. The dependence of theseconditions on temperature, wire’s parameters has beenanalyzed. A comparison between effects occurring in thetwo types of wire has been also considered.Người trình bày: Nguyễn Đình Hiên43. The Nonlinear Acoustoelectric Effect in aSuperlatticeThành phố Đồng Hới (03- 06/8/2009) Trang 48/ 102

Nguyễn Quang Báu, Nguyễn Văn Hiếu, NguyễnThị Thúy, Trần Công PhongThe acoustoelectric effect in a superlattice (SL) isinvestigated for an acoustic wave whose wavelength =/qis smaller than the mean free path l of the electrons andhypersound in the region ql. (where q is the acousticwave number). A nonlinear dependence of theacoustoelectric current jac on the constant electric fieldE is obtained by using classical kinetic Boltzman’sequation. Caculated in the case relaxation time ofmomentum is constant approximation. Numericalcaculations is done, and the result is discussed for atypical GaAs/AlAs SL. It is noted that when the electricfield is negative the current jac falls, reaches aminimum and rises. On the other hand, when theelectric field is positive the current increases, reaches amaximum and then falls off. A similar observation hasbeen noted acoustoelectric interaction in a multilayeredstructure resulting from the analysis of Si/SiO2structure. The dominant mechanism for such a behavioris attributed to the periodicity of the energy spectrum ofelectron along the SL axis.Người trình bày: Nguyễn Văn Hiếu44. Generalization of the Dirac and YangMonopoles to a 9-Dimensional Space – a Non-Abelian SO(8) MonopoleLê Văn Hoàng, Phan Ngọc Hưng, Nguyễn LêĐăngThành phố Đồng Hới (03- 06/8/2009) Trang 49/ 102We generalize the Dirac and Yang monopoles to a 9-dimensional space and have found that it is a non-Abelian SO(8) monopole. The explicit form of themonopole vector potential is given and the boundsystem composed of the found monopole coupled to aparticle by the SO(8) and Coulomb interaction isconsidered. We have found also that the system has theSO(10,2) dynamical symmetry.Người trình bày: Lê Văn Hoàng45. Magneto-phonon Resonance in QuantumWells with Parabolic PotentialBùi Đình Hợi, Trần Công Phong, Võ Thành LâmThe linear dc magneto-conductivity parallel to the walls ofa parabolic quantum well, with a magnetic field$\bold{B}=B \hat{z}$ applied normal to its barriers, isevaluated for electron – optical phonon interaction. Foroptical and polar optical phonons, the magnetoconductivityoscillates as a function of the magnetic fieldwith resonances occuring when $P \omega_c =\omega_0$, where $\omega_c$, $\omega_0$ arecyclotron and optical phonon frequencies, respectively,and where $P$ is an integer. The analytic results arenumerically evaluated to show explicitly the dependence ofmagneto-conductivity on the magnetic field, theconfinement frequency, and the temperature of the system.Người trình bày: Bùi Đình Hợi46. The Effect of Confined Phonons on theNonlinear Absorption Coefficient of a StrongThành phố Đồng Hới (03- 06/8/2009) Trang 50/ 102

Electromagnetic Wave by Confined Electronsin Compositional Superlattices and DopedSuperlatticesLê Thái Hưng, Nguyễn Đức Thắng, Nguyễn ThịHà Thu, Nguyễn Vũ Nhân, Nguyễn Quang BáuThe effect of confined phonons on the nonlinearabsorption coefficient of a strong electromagnetic waveby confined electrons in compositional superlattices anddoped superlattices are theoretically studied by usingthe quantum transport equation for electrons. Thedependence of the absorption coefficient on thefrequency ($\Omega$), the amplitude ($E_0$) ofexternal strong electromagnetic wave, the temperature($T$) of the system, doping concentration ($n_D$) ofdoped superlattices and the period ($d$) ofcompositional superlattices is obtained. Two cases forthe absorption: Close to the absorption threshold $| k\hbar \Omega_0 | \ll \bar{\epsilon}$ and far awayfrom the absorption threshold $ | k \hbar \Omega_0 |\gg \bar{\epsilon}$ ($k = 0,\pm 1,\pm 2,...$; $\hbar\omega_0$ and $\bar{\epsilon}$ and $ε$ are thefrequency of optical phonon and the average energy ofelectron, respectively) are considered. The formula of thenonlinear absorption coefficient contains a quantumnumber m characterizing confined phonons. Theanalytic expressions are numerically evaluated, plottedand discussed for a specific of the $GaAs-Al_{0.3}Ga_{0.7}As$ compositional superlattices and$n-GaAs/p-GaAs$ doped superlattices. There are moreresonant peaks of the absorption coefficient appear andThành phố Đồng Hới (03- 06/8/2009) Trang 51/ 102the values of the absorption coefficient are much largerthan they are in case of unconfined phonons.Người trình bày: Lê Thái Hưng47. Ph-Dependence of the Optical Bio-SensorBased on Dna - Carbon NanotubeVũ Thúy Hường, Quách Khả Quang, Trần ThanhThúy, Phan Đức Anh, Ngô Văn Thanh, NguyễnÁi ViệtThe pH-dependent behavior of the new type of opticalbio-sensors, based on DNA-wrapped CNNTs, wasinvestigated. The theoretical model was developed in theframe work of exciton theory in CNNTs and structurephase transition of DNAs from the right-handed B formto the left-handedZ form. Using the experimental obtained pHdependenceof its two basic elements: DNA and carbonnanotube, the pH-dependence of this type ofoptical bio-sensors was predicted. The good workingrange was found from pH 6 to 9 and the concentrationof measured harmful ions should be more than thecritical value. Our theoretical results were according tothe experimental data and deduction of pH and saltconcentration in solutionsNgười trình bày: Vũ Thúy Hường48. Magneton-Phonon Resonance Line-width inQuantum WellsVõ Thành Lâm, Trần Công Phong, Bùi Đình HợiThành phố Đồng Hới (03- 06/8/2009) Trang 52/ 102

Using the projection operator technique we obtain theanalytical expression of optical conductivity andabsorption power in the case of magnetophononresonance in quantum wells. Using computationalprogram we draw the graph showing the dependence ofthe absorption power on magnetic field, the frequency ofincident photon for different temperature and well’sparameters. Then, line-widths are obtained as the profileof the curves of graphs. The results show that thesplitting of resonant peaks in the presence of laser fieldcan be used for detection of magnetophonon resonancein the quantum wells.Người trình bày: Võ Thành Lâm49. Hatree – Fock – Bogoliubov Approximation inFunctional Integral FormalismNguyễn Trí LânHatree – Fock – Bogoliubov approximation is obtainedwithin framework of Hubbard – Stratonovichtransformation. The present approach allows for anability of investigating the coexistence of differentphases in several heavy fermion materials such ascoexistence of ferromagnetism and superconductivity inU - compounds.Người trình bày: Nguyễn Trí Lân50. Resistance and shot noise of Graphene n – p –n junctionsPhan Thị Kim Loan, Nguyễn Hải Châu, TrầnNguyên DũngUsing the T – matrix approach, we computedtheoretically resistance and shot noise in model ofGraphene n – p – n junctions. In this report, transportproperties were calculated in both fully and partlyballistic regimes. Obtained results of the odd-partresistance as a function of gate voltage were goodagreement with the experimental data and semi –classical picture represented by B. Huard et al. (PRL 98,236803, 2008). We also described the numerical resultfor Fano – factor of the system as a function of Fermi –level of the graphene sheet.Người trình bày: Phan Thị Kim Loan51. The complex states of many-particlecorrelations in quasi -two-dimentionalsemiconductor nanostructuresDương Xuân Long, Hoàng Ngọc CầmWe study the complex states of two-exctions in ultrafastnonlinear optical response of quasi -two-dimentionalsemiconductor nanostructures. The interactions in thesystem are modeled through Morse potentials andpower function potentials. We show analytically theenergy and wave function of biexcitons at zeromomentum.The scattering states and their effects areinvestigatedNgười trình bày: Dương Xuân LongThành phố Đồng Hới (03- 06/8/2009) Trang 53/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 54/ 102

52. Piezoelectric Effect on the Electron Mobility inan Unintentionally Doped GaN/AlGaN SurfaceQuantum WellNguyễn Viết MinhWe present a theoretical study the two-dimensionalelectron gas 2DEG at low temperature in anunintentionally doped GaN/AlGaN surface quantumwell, taking adequate account of the roughness-inducedscattering mechansms and effect due to sheetpolarization charges. Within model of surface quantumwells describes by an extended Fang-Howard wavefunction, we are able to derive an analytic expression forthe self-consistent Hartree potential. Thus, we obtainedsimple expresion describing the enhancement of the2DEG screening and unscreened potentials for diffentscattering sources. We studied the piezoelectric effect onthe electron mobility in an unintentionally dopedGaN/AlGaN surface quantum wellNgười trình bày: Nguyễn Viết Minh53. Some Thermal Properties of the FermionizedHeisenberg Antiferromagnet on the TriangularLatticeTrần Văn Quảng, Phạm Thị Thanh Nga, NguyễnToàn ThắngWe have analyzed the spin ½ isotropic Heisenbergantiferromagnetic system on the triangular latticewithin Popov-Fedotov functional integral formalismwhen the spin operators are reprensented by theThành phố Đồng Hới (03- 06/8/2009) Trang 55/ 102fermionic ones and the constraint of single occupancyconditions is taken into account by introducing animaginary chemical potential. By expanding around astate with local 1200 order we compute the one-loopcorrections to the free energy and discuss some thermalproperties.Người trình bày: Phạm Thị Thanh Nga54. The Acoustomagnetoelectric Effect in QuantumWiresNguyễn Văn Nghĩa, Nguyễn Vũ Nhân, NguyễnQuang BáuThe acoustomagnetoelectric (AME) effect in cylinderquantum wire with infinite potential has beeninvestigated for an acoustic wave whose wavelength λ =2π/ is smaller than the mean free path l of the electronsand hypersound in the region ql >> 1, (where is theacoustic wave vector). The analytic expression for theAME current j^AME is calculated in the case:relaxation time of momentum τ is constantapproximation and degenerates electrons gas. Thenonlinear dependence of the expression for the AMEcurrent j^AME on acoustic wave numbers q and thenegative AME current j^AME have been shown.Numerical computations and graphs are performed forAlGaAs/GaAs quantum wire. We have obtained thecurve of the AME current j^AME strongly decreasesfollowing acoustic wave numbers q. The results havebeen compared with the normal bulk semiconductors toshow the conformity with the image of the AME currentThành phố Đồng Hới (03- 06/8/2009) Trang 56/ 102

j^AME in the normal bulk semiconductors, but thevalues of the AME current j^AME in quantum wire aresmaller than they are in the normal bulksemiconductors.Người trình bày: Nguyễn Văn Nghĩa55. Total Diffraction Reflection of Polarized Neutronsby Crystal Surface With Polarized Nucleus, Placedin Periodical Variable Magnetic FieldHoàng Văn Ngọc, Nguyễn Đình DũngIn this article the differential cross-section of totaldiffraction reflection of polarized neutrons by crystalsurface with polarized nucleus placed in periodicalvariable magnetic field are obtained and discussed.Người trình bày: Hoàng Văn Ngọc56. Combined studies of cell response to electricpulses: A simple approach.Nguyễn Thị Thùy Nhung, Lê Thanh Tùng, NguyễnĐức Giang, Ngô Văn Thanh, Nguyễn Ái ViệtUsing the analytical calculations for the interactionbetween trapezoidal pulses and biological membranes[Kotnik et al, Biophys J. 2006, 90(2), 480-491] and theapproximate theory for pore creation and pore current[DeBruin et al, Biophysical Journal, 77, 3, 1999, 1213-1224], in this work, we have studied the effects ofelectric pulses on the cell responses, including theelectroporation phenomenon. We investigated thedependance of membrane potentials of outer (plasma)and inner (organelle) membranes, the membraneThành phố Đồng Hới (03- 06/8/2009) Trang 57/ 102currents and pore densities on the electric pulses. Ourapproach can be applied to target the inner membrane,making the cell selectivity available or developed tomore complex structures (triple cell model, themitochondria, for example). Our results are in verygood agreement with previous numerical calculations.Người trình bày: Nguyễn Thị Thùy Nhung57. Calculation of the Optical Absorption Power inRectangular Quantum Wire by Using State-Independent Projection TechniqueHuỳnh Vĩnh Phúc, Lê Thị Thu Phương, TrầnCông PhongLinear and nonlinear optical absorption power inrectangular quantum are calculated by using stateindependentprojection technique. The analyticalexperessions for the optical absorption power inrectangular quantum wires are obtained. The numericalresult for the dependence of the optical absorption poweron its energy as systems temperature T and theparameters charactering the sample have been done.Người trình bày: Huỳnh Vĩnh Phúc58. Nonlinear Optical Absorption of IntensityTerahertz Radiation by Confined Electrons inCylindrical Quantum WiresLê Thị Thu Phương, Huỳnh Vĩnh Phúc, Lê Đình,Trần Công PhongAnalytic expressions for the optical absorption coefficient ofintensity terahertz (THz) radiation caused by confinedThành phố Đồng Hới (03- 06/8/2009) Trang 58/ 102

electrons in cylindrical quantum wires (CQW) are calculatedby using the quantum kinetic equation for electrons for bothscattering mechanisms of the electron–optical phonon andelectron-acoustic phonon. Second-order multiphoton processis included into present account. The dependence of theabsorption coefficient on the intensity E0 and the frequencyΩ of the THz radiation, the temperature T of the system, andthe radius R of CQW is numerically evaluated and plottedfor a specific quantum wire. The numerical results for twoscattering mechanisms are compared at one another. Theirsimilarities and differences are discussed.Người trình bày: Lê Thị Thu Phương59. Secondary electrons production in theionization of tissue by ion beams and theirDNA-damageNgô Thị Thu Phương, Nguyễn Thị Thương, NgôVăn Thanh, Nguyễn Ái ViệtAt present, ion beam cancer therapy is widely usetreatment tool. Due to the complexity of ion-tissueinteraction, the mechanisms and biological effects of ionbeams can not be unambigously explained and remainunclear. Most research interests have focused on DNA,wich contains genetic information and can influence thephenotype of an organism. In the last years a newnanoscale aproach is developed based on the mechanismof ion-induced electron production in the tissue-likemedia and their DNA-damage. In this work, to estimatethe DNA damage by ion beams, instead of 10-parametersmodel of Esurdutovich et al 2008 [1] we suggested asimpler 7-parameters model for interaction betweenThành phố Đồng Hới (03- 06/8/2009) Trang 59/ 102carbon ion beams with water molecules, the majorcontent of living tissue. Numerical estimate is performedfor the case of carbon ion beams. Our obtained dose-depthcurves are comared with results of [1].Người trình bày: Ngô Thị Thu Phương60. Nghiên cứu năng lượng tương quan đối vớiexciton tích điện trong chấm lượng tử 2 chiềuNguyễn Minh Thảo, Nguyễn Hồng QuangNghiên cứu bài toán exciton tích điện trong chấmlượng tử hai chiều có thế giam cầm dạng parabol bằngmô hình Hartree-Fock có kể đến hiệu ứng tương quangiữa các điện tử. Năng lượng tương quan được xácđịnh như là sai số giữa năng lượng chính xác và nănglượng thu được trong mô hình Hartree-Fock. Để tínhnăng lượng tương quan chúng tôi sử dụng phươngpháp tương tác cấu hình (Configuration Interaction –CI) và giới hạn ở các kích thích đơn hạt. Đã tính vàkhảo sát ảnh hưởng của độ giam cầm lên năng lượngtương quan. Kết quả tính số cho chấm lượng tử GaAscho thấy ảnh hưởng không nhỏ của năng lượng tươngquan đối với phổ hấp thụ của exciton tích điện, đặc biệtđối với các trạng thái kích thích.Người trình bày: Nguyễn Minh Thảo61. Polariton Parametric Amplification inSemiconductor Microcavity Investigated with aBoltzmann ApproachLê Nguyễn Minh Thông, Cao Huy ThiệnThành phố Đồng Hới (03- 06/8/2009) Trang 60/ 102

Within the approach of Boltzmann kinetic equation, weinvestigated interaction between polaritons inmicrocavity. Under resonant optical excitation, thisscattering process resulted in concentration Polaritonson not only the ground state, known as Bose-EinsteinCondensation, but also a excited state. Our calculatedresults are in agreement with experimental results ofSavvidis et al.Người trình bày: Lê Nguyễn Minh Thông62. Model of Subdiffusion Within Flavin ReductaseProtein with Morse PotentialNguyễn Thị Thương, Ngô Thị Thu Phương, NgôVăn Thanh, Nguyễn Ái ViệtSome phenomenon observed in recent nanoscale singlemoleculebiophysics experiments is subdiffusion, whichlargely departs from the classical Brownian diffusiontheory. To explain this subdiffusion phenomenon, atheoretical model is formulated in the work of Kou et al2008 and the taken potential was parabolic. In this workwe investigate the Kou model with Morse potential forthe case of flavin reductase protein. By applying Morsepotential, we found a better agreement withexperimental data then using parabolic potential.Người trình bày: Nguyễn Thị ThươngIII. VẬT LÝ THỐNG KÊ, TINH THỂ KIM LOẠI, HỢP KIM63. The Pressure Dependence of EXAFS Debye-Waller Factors in CrystalsVũ Văn Hùng, Hồ Khắc Hiếu, Nguyễn Văn HùngIn present article, the pressure dependence of Debye-Waller factors in crystals have been investigated byusing statistical moment method (SMM). The presentSMM calculations indicate that the Debye-Wallerfactors of crystals decreases slightly under highpressure. Our results are also compared with othercalculations and experiment and are found to be in gooagreement with these results.Người trình bày: Hồ Khắc Hiếu64. Study of Structural Phase Transformation andMelting Temperature of Metals: PressureDependenceVũ Văn Hùng, Đặng Thanh Hải, Hoàng Văn TíchThe melting temperature and phase transformation ofmetals are studied using the statistical moment method,going the quasi-harmonic appromations. The meltingand phase transition temperatures of metals arecalculated as a function of the pressure. We discuss thepressure dependence of these temperatures of Ce, Dy,Fe, Ti metals and compare the present results with thoseof the experimental results.Người trình bày: Đặng Thanh HảiThành phố Đồng Hới (03- 06/8/2009) Trang 61/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 62/ 102

65. Study of Thermodynamic properties and selfdiffusionof AuCu SuperlatticeVũ Văn Hùng, Nguyễn Thị Hằng, Cao HuyPhươngWe have investigated the self-diffusion andthermodynamic quantities of AuCu superlattice usingthestatistical moment method in the statistical physics.The activation energy, diffusion coefficient, preexponentialfactor, lattice parameter, thermal axpansioncoefficient, ete.., are dirived in closed analytic forms,The present analytic formulas including theanharmonic effects of the lattice vibrations give thepredicted values of these quantities.Người trình bày: Nguyễn Thị Hằng66. Study of Elastuc Moduli of Interstitial Alloys byStatistical Moment Mothed: TemperatureDependenceVũ Văn Hùng, Nguyễn Thị Thu HiềnThe elastic moduli of the interstitial alloys at finitetempertature have been investigated using thestatistical moment method. The Young, shear and bulkmoduli of the body-centered cubic (bcc) interstitialalloys like Fe-X alloys (X=H, N, Li and Si) arecalculated as a function of the temperature. We discussthe temperature dependence of the elastic moduli, E, Gand K of the interstitial alloys and compare ourcalculated results with those of the experimental results.Người trình bày: Nguyễn Thị Thu Hiền67. Influence of Temperature on Self Diffusion inGaAs CrystalVũ Văn Hùng, Phan Thị Thanh Hồng, NguyễnThanh HảiBy using the statistical moment method (SMM) toinvestigate the self-diffusion of Ga and As atoms inGaAs with crystal structure as ZnS type, the activationenergy (Q), diffusion coefficient (D) and pre-exponentialfactor (D0) are expressed by analytically closedexpressions. The present analytical formulas areincluding the anharmonic effects of the latticevibrations. The obtained results (Q, D, D0 ) are appliedto numerical calculation. The calculated results are inagreement with experimental data.Người trình bày: Phan Thị Thanh Hồng68. Thermodynamic Property of Some QuantumCrystals under PressureVũ Văn Hùng, Nguyễn Quang Học, Đinh QuangVinhThermodynamic properties such as the the latticeconstants, the thermal expansion coefficients,etc. ofsome quantum crystals (He, Ar, Xe, Ne) under pressureare determined by the Einstein correlational model andthe statistical moment method and our calculatedresults are compared with the exparimental data.Người trình bày: Đinh Quang VinhThành phố Đồng Hới (03- 06/8/2009) Trang 63/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 64/ 102

IV. VẬT LÝ LƯỢNG TỬ, QUANG LƯỢNG TỬ, THÔNGTIN LƯỢNG TỬ69. Perspective Topics in Physics of QuantumInformationNguyễn Văn HiệuThree actuals topics in physics of quantum informationprocessing technology are discussed:1. Quantum information exchange between twoqubits.2. Tensor representation of qubits and multiqubitsystems.3. Cluster states of multi-qubit systems.The aim of this talk is to encourage the Conferenceparticipants to study these new and perspectiveproblems of quantum information.Người trình bày: Nguyễn Văn Hiệu70. Quantum Information and ProbabilityDescription of Quantum StatesVladimir I. Man'koThe new approach in quantum information, in whichthe quantum states of qubits and qudits are desrcribedby fair probability distributions, is reviewed. Thequantum information channels and correspondingpositive and completely positive maps of densityoperators are considered as classical-like informationchannels where information is propagating being codedby probability distributions. The new experiments tostudy bounds (quantum inequalities) in quantuminformation processing associated with quantumfluctuations are discussed for the case of purityparameters substantially different from the unity.Prospects for elaborating the applications oftomographic probability representation of quantumstates and quantum channels in quantum informationare presented.Người trình bày: Vladimir I. Man'ko71. Five-level Model For Cascade Scheme of EIT InCold 85Rb AtomsĐinh Xuân Khoa, Cao Long Vân, Vũ Ngọc Sáu,Nguyễn Huy BằngSchemes in electromagnetically induced transparency(EIT) which would support multiple-transparencywindows are of interest, e.g., for slowing light pulses,simultaneously at close-lying wavelength. For thispurpose a dense hfs structure of the 85Rb (5D5/2) statecan be utilized in a stepwise 5S1/2(F = 3) -> 5P_3/2(F’= 3) 5D_5/2 (F” = 4, 3, 2) process.In this paper we extend the model proposed in.Calculations for spectra in MOT at various intensitiesIc of the coupling laser are performed. Our results havebeen verified by experimental group in WarsawNgười trình bày: Đinh Xuân KhoaThành phố Đồng Hới (03- 06/8/2009) Trang 65/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 66/ 102

72. Explicit Construction of Cluster States ofSystems of Two and Three Spin-QubitsLê Thị Hà LinhRecently it was proposed to use a new class of entangledstates of multi-qubit systems-the cluster states, as a toolin the quantum computation. In the present work, wederive explicit expressions of the cluster states of a twospin-qubit system, a three spin-qubit chain and a threespin-qubit ring. Explicit formulae of the time evolutionof cluster states of above-mentioned systems of two andthree spin-qubits with direct spin-spin couplings werealso established. They are useful for study on therealization of the quantum gates in these systems.Người trình bày: Lê Thị Hà Linh73. New Entropic Bounds in Quantum InformationProcessingMargarita A. Man'koThe Shannon entropy and entropic uncertaintyrelations in quantum information processing arereviewed. The subadditivity and strong subadditivityconditions (inequalities) for joint tomographicprobability distributions describing the multiqubitquantum states are presented. The deformed Renyientropy associated with the multiqubit quantum statesis introduced, in view of quantum spin tomograms ofthe multiqubit states. New entropic bounds are obtainedfor both the Shannon and Renyi tomographic entropies.The bounds are applied to the experiments of meauringThành phố Đồng Hới (03- 06/8/2009) Trang 67/ 102quantum states by homodyne photon detector and a newentropic uncertainty function depending on the localoscillator's phase is introduced. In quantum optics, thenonnegativity of the entropic uncertainty function issuggested to be checked as a measure of the accuracy ofthe homodyne photon detecting experiments as well as acheck of the quantumness of information processingwith Gaussian channels.Người trình bày: Margarita A. Man'ko74. Accurate Potential Energy Curve for The 31ПState of NaLi MoleculeNguyễn Huy Bằng, Đinh Xuân Khoa, Lê CảnhTrung, Trần Mạnh CườngThis paper presents construction of an accuratepotential energy curve (PEC) for the 31П state of NaLimolecule by means of the Inverted PerturbationApproach (IPA). In the framework of adiabaticapproximation, the 31П state is described by the radialSchrödinger equation in which the term for potentialfunction to be determined. Having 380 spectral lines ofthe 31П←11∑+ band obtained in our previous work[Chem. Phys. Lett, 440 (2007) 199-202], we use thesemi-classical Rydberg-Klein-Rees (RKR) method todetermine an approximate PEC. This RKR potentialcurve is then used as the trial one for the IPA method tosearch iteratively potential corrections in a way ofminimizing energy differences between the calculatedand observed level energies. After several iterations ofthe IPA procedure we obtain the final IPA potentialThành phố Đồng Hới (03- 06/8/2009) Trang 68/ 102

energy curve, which can reproduce the experimentaldata within dimensionless root mean of square deviation0.6. We demonstrate a good agreement betweenFranck-Condon factors calculated from the IPApotential and the intensity distributions of thecorrespondingly observed spectral lines. Finally,comparison with the up-to-date theoretical results forNaLi, the IPA potential confirms reliability of recent abinitio calculationsNgười trình bày: Nguyễn Huy Bằng75. New Entanglement Criterion For Two-ModeStatesTrương Minh Đức, Hoàng Phương HàIn this paper, we derive a new entanglement criterionfor two-mode states via generalizing the entanglementcriteria of Hillery and Zubairy [Phys. Rev. Lett. 96,050503 (2006)] by using the Cauchy – Schwarzinequalities and the separable and inseparable propertyof a density matrix given by Horodecki. After that, weapply this criterion to detecting entanglement for sometwo-mode states.Người trình bày: Hoàng Phương Hà76. Transmittance Function Of Two-ports NolinearFiber Mach-Zehnder InterferometerNguyễn Văn Hóa, Hồ Quang Quý, Nguyễn ThịThanh Tâm, Vũ Ngọc SáuIn this article a two-ports nonlinear fiber Mach-Zehnder interferometer is proposed. The expression foroutput-input intensity relation and the transmittancefunction are derived based on principle operation ofoptical coupler. The expression of coupling coefficient ofcoupler is presented. The bell shape of thetransmittance function is simulated. The results lead toinvestigate bistability of two-ports- nonlinear fiberMach-Zehnder interferometer and to confirm bistablecharacter of it in the future.Người trình bày: Nguyễn Văn Hóa77. Generation of free-travelling four-mode clustertypeentangled coherent statesNguyễn Bá Ân, Trần Thái HòaA new scheme is proposed to generate free-travellingfour-mode cluster-type entangled coherent states.Compared with other previously proposed schemes oursis very simple in execution using only one ¹-cross-Kerrmedium and two 50:50 beam-splitters each of which issandwiched between two ¹/2-phase-shifters. Despite thesetup simplicity, our scheme, unlike the others whichare all probabilistic, is efficient with 100 % successprobability since no measurements are involved at allNgười trình bày: Trần Thái Hòa78. Entanglement Criterion for Bipartite QuantumStates: ApplicationTrương Minh Đức, Nguyễn Thị Xuân HoàiThành phố Đồng Hới (03- 06/8/2009) Trang 69/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 70/ 102

In this paper, we use the criterion provided by E.Shchukin and W. Vogel [Phys. Rev. Lett. 95, 230502(2005)] for determining when a bipartite quantum stateis entangled. We first show that the entanglementcriterion is the necessary and sufficient condition for thepartial transposition of bipartite quantum states.Furthermore, previously known entanglement criteriaare proved to be special cases of this criterion. We thenapply the entanglement criterion to determine entangledproperty of several non-classical two-mode states.Finally, we conclude by making remarks onapplicability of this criterion.Người trình bày: Nguyễn Thị Xuân Hoài79. Density matrix of strongly coupled quantumdot microcavity systemNguyễn Văn HợpAny two-level quantum system can be used as aquantum bit (qubit)-the basic element of all devices andsystems for quantum information and quantumcomputation. Recently it was proposed to study thestrongly coupled system consisting of a two-levelquantum dot and a monoenergeti photon gas in amicrocavity-the strongly coupled quantum dotmicrocavity(QD-MC) system for short, with theJaynes-Cumming total Hamiltonian, for the applicationin the quantum information processing. Differentapproximations were applied in the theoretical study ofthis system. In this work, on the basis of the exactsolution of the Schrodinger equation for this systemThành phố Đồng Hới (03- 06/8/2009) Trang 71/ 102without dissipation we derive the exact formulae for itsdensity matrix. The realization of a qubit in this systemis discussed. The solution of the system of rate equationfor the strongly coupled QD-MC system in the presenceof the interaction with the environment was alsoestablished in the first order approximation with respectto this interactionNgười trình bày: Nguyễn Văn Hợp80. Higher-Order Squeezing and Antibunching ofSUq(1,1) q-Coherent StatesTrương Minh Đức, Trần Lê HùngWe have studied the higher-order squeezing and theantibunching in SUq(1,1) q-coherent states. Weobtained analytic forms of the degree of the higher-ordersqueezing and the antibunching. We show that theSUq(1,1) q-coherent states exhibit both higher-ordersqueezing, and also exhibit the antibunching behaviors.There are some different properties of the two typessqueezing and the antibunching in SUq(1,1) q-coherentstates given in the conclusionNgười trình bày: Trần Lê Hùng81. Optical Soliton Propagation in Single ModeOptical Fibers in The Presence of StimulatedRaman ScatteringThái Thị Minh Nguyệt, Vũ Ngọc Sáu, NguyễnHuy BằngThành phố Đồng Hới (03- 06/8/2009) Trang 72/ 102

Propagation of femto-second or subfemto-second opticalpulses in single mode fibers is of interest in opticalcommunication because of its potential for high datarate transmission systems, especially when shapes ofenvelope of the pulses remain constants (solitons). Insuch short time regime, evolution of envelope of thepulses is described by the so called GeneralizedSchrödinger Equation (GNSE) which takes into accountnonlinear effect as Self Phase Modulation (SPM),Group Velocity Dispersion (GVD), Third OrderDispersion (TOD), and Stimulated Raman Scattering(SRS). In this paper we search soliton solutions for theGNSE in the presence of all above nonlinear effects byuse of Jacobian expansion. We find several ranges forthe above nonlinear effects in which solitonspropagation can be maintained.Người trình bày: Thái Thị Minh Nguyệt82. Investigation Of Wavelength Shifting In TheDFB Laser With Two Sections By UsingInjection Current I2 Into Saturable AbsorberSectionNguyễn Văn Phú, Đinh Văn HoàngIn this paper we study of wavelength shifting in theDFB laser with two sections by using injection currentI2 into the saturable absorber section. By using theinjection current I2, we investigated the mode of lasergeneration of the DFB laser with two sections.Thành phố Đồng Hới (03- 06/8/2009) Trang 73/ 102We found the suitable parameters for experimentalprocedure to application of the two sections DFB laserin the optical communication.Người trình bày: Nguyễn Văn Phú83. Matching of Pump and Mode volumes insideLaser Diodes side-pumped Laser RodNguyễn Văn Hóa, Hồ Quang Quý, Vũ Ngọc SáuMismatching of the pump volume and mode volumeinside active rod is an important effect, which influencesthermal effect, periodical induced refractive index, andthen efficiency of laser generation. To avoid it, it needsto choice a optimal collection of basical parameters ofpumping laser diodes and of cavity. By transfer matrixof optical elements and cavity theory, an equationdiscribed relation between transverse waist of pumpintensity inside laser rod and waist of Gaussian modeTEM00 of laser cavity is adressed. Using simulationmethod, the optimal value of parameter is calculated anddiscussed. The results give us a suitable choice forexperiments in the furture.Người trình bày: Hồ Quang Quý84. Four-level Model For EIT of Cold 85^RbVũ Ngọc Sáu, B. Brzostowski, Cao Long Vân,Đinh Xuân Khoa, B. GrabiecIt is shown by theoretical model describing interactionof strong electromagnetic filed with four-level atomicsystem of cold 85Rb that a multiple windows ofThành phố Đồng Hới (03- 06/8/2009) Trang 74/ 102

electromagnetically induced transparency (EIT) occursin the spectral profile of the profile absorption in thetransition 5S_1/2 (F = 2, 3) 5P_3/2 (F = 2, 3).Our results are in good agreement with previoustheoretical investigations. Obtained theoreticalpredictions will be compared soon with experimentalobservations of Warsaw’s group.Người trình bày: Vũ Ngọc Sáu85. Quantum Dynamics of Spin-Qubits in a Spin-Star EnvironmentHồ Công SơnThe fundamental unit of all systems for the quantuminformation processing is qubit. Each microscopic spin-1/2 particle with non-vanishing magnetic moment canbe used as a qubit called spin-qubit. In a solidcontaining ions with non-vanishing moments- aquantum spin environment, there always exists theinteraction between qubits and this environment.Recently, exactly solvable models of a spin-qubit andtwo coupled spin-qubits interacting with a spin-starenvironment containing an infinite number of couplednuclear spins in the thermodynamic equilibrium at afinite temperature are presented, in which all the spinspincouplings are the XY Heisenberg interaction. Inthis study, basing a common simple method we derivethe exact analytical expression of the elements of theirtotal and reduced density matrices. The explicitexpressions of these elements are presented in somespecial cases with simplifying initial conditionsNgười trình bày: Hồ Công Sơn86. Quantum interference effects in resonancefluorescence spectra of Y- type four – level atomThái Doãn Thanh, Lê Văn Nam, Nguyễn Huy CôngIn this paper we investigate the influence of quantuminterference induced by spontaneous emission on thefluorescence spectrum of a laser driven four – level atomin Y-type configuration. For some parameters,interference assited enhancement of inner sideband andnarrowing of central peaks may also accur in thefluorescence spectrum. We presents using the dressedstate dsecription of the atom – light interactionNgười trình bày: Thái Doãn Thanh87. The resonance fluorescence of a three-levelatom in the presence of a squeezed broadbandvacuum and quantum interferenceThái Doãn Thanh, Lê Văn Nam, Nguyễn Huy CôngThe resonance fluorescence spectrum (RFS) of a -typethree-level atom damped by a broad-band squeezedvacuum and driven by a single coherent field whichsimultaneously couples the two lower states are studied.Although the system has two lower states, quantuminterference is possible because there are interferingpathways to each of the two lower states. The additionalinterference terms allow for interesting effects such asThành phố Đồng Hới (03- 06/8/2009) Trang 75/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 76/ 102

the suppression of a dark state which is present withoutthe interference. We consider the interplay between thesqueezed field and the vacuum-induced coherence (VIC)between the two possible decay channels. Finally weexamine a narrow spectral feature in the resonancefluorescence of the atom with quantum interference.Người trình bày: Thái Doãn ThanhV. VẬT LÝ TÍNH TOÁN, MÔ PHỎNG VÀMÔ HÌNH HÓA88. Ising spin glass on a FCC lattice: a Monte-CarlosimulationHoàng Đình Tiến, Ngô Văn Thanh, Nguyễn Ái ViệtWe studied the Ising spin glass with bimodalinteractions (±J) in dimension three (3D). Theantiferromagnet FCC Ising model is fully frustratedand has a strong first-order transition if there is nodisorder, it becomes spin glass when introducing asmall interaction disorder P~ 0.03%. We first propose anew technique for calculating the magnetization andsusceptibility from the order parameter Q.Người trình bày: Hoàng Đình Tiến89. Density - Functional Study of Magneto -Structural Correlation in Mn4 Molecules: A wayto develop Single - Modecule MagnetsNguyễn Anh Tuấn, Shin - Inchi Katayama, DamHieu ChiSingle-molecule magnet (SMM) is a molecule that canfunction as magnets below its blocking temperature (T B ).This behavior results from a high ground-state spin (S T )combined with a large and negative axial magnetoanisotropy(D). The S T of SMM results from local spin moments at TMions (S i ) and exchange coupling between them (J ij ).Moreover, J ij have to be important to well separate theground spin state from the excited states; the relative highvalue of T B is dependent on them. To tailor these quantitiesrequires deeply understanding of magneto-structuralcorrelations of SMMs. Previous theoretical studies of SMMsThành phố Đồng Hới (03- 06/8/2009) Trang 77/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 78/ 102

success in calculating these quantities of synthesized SMMs,however, discussion about magneto-structural correlationsof SMMs as well as suggestion for designing new SMMs arestill missing. In this study, we focus on exploring magnetostructuralcorrelations of a fascinating SMM system, i.e.distorted cubane Mn 4+ Mn 3+ 3 SMMs based on Densityfunctionaltheory (DFT), to support for tailoring J ij of SMMs,as well as for designing high T B SMMs.Firstly, our calculated results demonstrate that intramolecularexchange coupling of known Mn 4+ Mn 3+ 3 SMMs is dominatedby antiferromagnetic (AFM) couplings between the Mn 4+ ionsand the three Mn 3+ ions resulting in a ferrimagnetic structureand S T = 9/2 consistent with the experimental observation. Themechanism of AFM Mn 4+ -Mn 3+ coupling (J AB ) is determinedby delocalization of 3d electrons from the d z 2 orbitals at theMn 3+ sites to the t 2g orbitals at the Mn 4+ site through ligandorbitals which results in the π-like hybridization states amongthese orbitals just below the Fermi level. These results allowsus to predict that J AB will be strongest when the Mn 3+ -L-Mn 4+exchange coupling angle α ≈ 90 o , while synthesized Mn 4SMMs have α ≈ 95 o .Secondly, by rational variations in ligands, novel Mn 4+ Mn 3+ 3SMMs, having S T of 9/2, α in a range of 88.5 o −95.5 o , andJ AB /k B in a range of −36.77 K to −214.79 K, have beendesigned. The results confirm the correlation between J ABand α. Moreover, this work reveals first possibilities ofadopting N based ligands, NR’ (R’ = a radical), to formexcellent exchange pathways between Mn ions in Mn 4 SMMs.Adopting N based ligands to form exchange pathwaysbetween Mn ions can enhance three times of J AB incomparison to using O. Variation in the R’ radical isdemonstrated as an effective way to tailor and optimize theexchange pathways between Mn ions.In conclusion, we have succeeded in exploring magnetostructuralcorrelation in Mn 4 SMMs based on DFT. Theresults strongly support for synthesizing new superior Mn 4SMMs with strong intramolecular exchange coupling.Người trình bày: Nguyễn Anh Tuấn90. First Principle Study on AlN Nano WireVũ Ngọc Tước, Nguyễn Viêt MinhWe present a first-principle study on the atomic andelectronic structure of AlN Nanowire and examine thedepedence of surface stress on Nanowire lateral size andshape. The hexagonal wire size ranging as 10-16-22and triangular wire ranging from 10-13-16-20. Weinvestigate the unsaturated dangling bond state in theregion of bandgap with varying the wire’s diameter. Wealso calculated the surface formation energy and findthat it decrease with increasing the wire diameter and agreater stability (lower surface formation energy) comeswith hexagonal wires. We also study the dependence oftheoretical prediction on various DFT functionaltreatment using Dmol3 local orbital density functionalmethod with an effective core potential.Người trình bày: Vũ Ngọc Tước91. Computer Simulation of Microstructure inDisordered SystemsLê Thế Vinh, Nguyễn Minh Quân, Dương CôngHiệp, Nguyễn Thành Tín, Nguyễn Tất Đạt, ĐổngQuốc ViệtComputer simulation will be done to determine the localstructure of disordered system. Twenty-four systems ofSiO2, (Al2O3)x(SiO2)1-x, Co-B and Co-P at differentdensities is prepared by compressing the low-density.The microstructure will be analyzed through the pairradial distribution function, bond-angle distributionThành phố Đồng Hới (03- 06/8/2009) Trang 79/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 80/ 102

and the characteristics of voids and void aggregations.We focused on two kinds of void aggregations: voidclusters and void tubes.Người trình bày: Lê Thế Vinh92. Investigation of Thermodynamic Properties ofLiquid Transition MetalsLê Hoàng Anh, Đỗ Phương LiênWe present a study of thermodynamic properties ofliquid transition metals. The cohesive energies and theheats of fusion have been calculated in the bond-orderapproach coupled with the cluster Bethe lattice methodfor 3d, 4d and 5d liquid transition metals, taking inaccount s-d hybridization which is treated selfconsistently.The results obtained are in good agreementwith experimental data. An analyze of the contributionsrelated to the s- and d-electrons to the cohesive energiesare realized and showed that s-electrons play animportant part in the cohesion of liquid transitionmetals. The tendencies of thermodynamic properties forthree series have been also discussed. So far, our work isthe first systematic study of properties of cohesion of allthe transition metals in their liquid phases.Người trình bày: Lê Hoàng Anh93. Investigation of Structural and ElectronicPropertiesof Liquid Transition Metals and TheirAlloysLê Hoàng Anh, Đỗ Phương LiênThành phố Đồng Hới (03- 06/8/2009) Trang 81/ 102We present a study of structural and electronicproperties of 3d, 4d and 5d liquid transition metals andtheir alloys by calculating the interatomic potentials inthe tight-binding bond-order approach coupled with thecluster Bethe lattice method and realizing dynamicmolecular simulations The results method are in goodagreement with accurate diffraction data. Thetendencies of properties for three series have been alsodiscussed. So far, our work is the first systematic studyof structural and electronic properties of all thetransition metals in their liquid phases.Người trình bày: Lê Hoàng Anh94. The Operator Method for non-PerturbationCalculations of Hydrogen Spectra in aMagnetic Field of Arbitrary StrengthNguyễn Phương Duy Anh, Nguyễn Văn Hòa, LêVăn HoàngBy using the Laplace transformation we apply theoperator method (OM) directly to the problem of ahydrogen atom in a magnetic field of arbitrary strength.The high-order corrections are calculated by both theperturbation theory and the iterative procedure andthen compare each to other. The correction series arerapidly convergent that allow us to obtain exactnumerical solutions for the considered problem.Người trình bày: Nguyễn Phương Duy Anh95. Density-Functional Study of Jahn-Teller Effectin BaTiO3Thành phố Đồng Hới (03- 06/8/2009) Trang 82/ 102

Nguyễn Tiến Cường, Nguyễn Anh Tuấn, Đỗ VănThanh, Nguyễn Hoàng Linh, Nguyễn ThùyTrang, Phạm Hương Thảo, Bạch Thành CôngThe electronic structure and bonding modes of theperovskite oxide BaTiO3 in cubic and distortedtetragonal structures are investigated base on DensityFunctional Theory (DFT). The Density of State (DOS)and Muliken population analyses are brought out inorder to examine Jahn-Teller effect. The results showthat Ti displacement makes the charge transfer from Oatoms to Ba and T atoms. Our results also indicate thatBa atoms play a relatively important role in distributingthe charge transfer.Người trình bày: Nguyễn Tiến Cường96. ComputerSimulation On Local Structure AndDiffusion In System Li2O-SiO2Phạm Hữu Kiên, Vũ Văn Hùng, Phạm KhắcHùng, Vương Thị ThúyThe local structure of liquid (SiO2)x(Li2O)1-x (x =0.1, 0.2, 0.3, 0.4, 0.5) has been investigated usingmolecular dynamic models consisting of 3000 atoms at2200 K. The local structure is analyzed through partialdistribution function (PDF), coordination number andbond angle statistic. The obtained PDFs are in goodagreement with experiment data. The simulation revealsthat most Si atoms are four-fold coordinated, whereasthe coordination of Li atoms are four-, five-, six-fold. Weobserve a clear corelation between the lithiumconcentration and mobility of silicon and oxygen. Thisdata results in the modifying the teterahedral networkstructure by lithium impurity.Người trình bày: Phạm Hữu Kiên97. Computer Simulation Of Interstitial Diffusion InDisordered SystemsTrịnh Văn Mùng, Hoàng Quốc Hoàn, Phạm KhắcHùngThe direct calculation of diffusion in atomistic modelswith know interaction potential between impurity andmatrix atoms is a long standing problem in glassscience. A new calculation method overcoming therestriction of non-force method is applied to simulatediffusion in Lennard–Jones models and also in theregular disordered lattice. The size effect and theArrhenius behavior for both amorphous and crystallinemodels are examined and discussed here. The simulationreveals some specific properties for interstitial diffusionin amorphous solids compared to crystal. In particular,we observe the close value of activation energy foramorphous and fcc models, meanwhile the preexponentialcoefficient of amorphous solid is similar toone of bcc crystal.Người trình bày: Trịnh Văn Mùng98. High Harmonic Generation Spectra of BasicBases of DNA Interacting with Ultra-ShortLaser PulsesThành phố Đồng Hới (03- 06/8/2009) Trang 83/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 84/ 102

Phan Thị Cẩm Nhung, Nguyễn Ngọc Ty, Lê VănHoàngBy using the strong field approximation via Lewensteinmodel we calculate high-order harmonic generation(HHG) spectra induced while ultra-short pulses ofintense lasers interacting with the basic bases of DNAsuch as Adenine (C5H5N5), Guanine (C5H5N5O),Cytosine (C4H5N3O), Uracil (C4H4N2O2), Thymine(C5H6N2O2). Analyzing the calculated data we candistinguish the bases from each other by the alignmentdependence of HHG. Further more, we apply theiterative method, suggested in our previous work, forretrieving some structural information of the Cytosinebase from the ‘simulated experimental’ HHG data.Người trình bày: Phan Thị Cẩm Nhung99. Genetic Algorithm and Retrieval of InteratomicSeparations of the Complex Molecules byUltrashort Laser PulsesNguyễn Ngọc Ty, Lê Văn HoàngWe show that the iterative method suggested in ourprevious work is applicable for complex molecules (O3,OSC, and BrCN) in order to retrieve interatomicseparations from high-order harmonic generation(HHG) spectra emitted by the molecules interactingwith the ultrashort intense laser pulses. For retrieval ofstructure information, two parameters of interatomicseparations in these cases, we need HHG spectra at leastfor two different alignments. For fitting procedure, thegenetic algorithm can be applied that reduces timeconsumingin compare with the direct scanning method.This is very important for further application ofmolecules having a large number of structuralparameters.Người trình bày: Nguyễn Ngọc Ty100. Tracking Acetylene/Vinylidene IsomerizationProcess by Ultrashort Laser Pulses using HighHarmonic GenerationNguyễn Ngọc Ty, Tăng Thị Bích Vân, Lê VănHoàngWe simulate the Acetylene/Vinylidene isomerization bythe Born-Oppenheimer molecular dynamics methodimplemented in the GAUSSIAN 3.0 package.Furthermore, by using the Lewenstein model we thencalculate the high-order harmonic generation (HHG)spectra emitted by C2H2 molecule during the chemicalreaction path of isomerization due to interacting withthe 10 fs pulse of the 800nm intense laser. We identifythe intensity peaks of HHG spectra nearby the stable,meta-stable and transition states of the C2H2 moleculethat can be useful for tracking the Acetylene/Vinylideneisomerization process.Người trình bày: Nguyễn Ngọc TyThành phố Đồng Hới (03- 06/8/2009) Trang 85/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 86/ 102

HỘI NGHỊ VẬT LÝ LÝ THUYẾT TOÀN QUỐC LẦN THỨ 34(Thành phố Đồng Hới, 03 – 06/ 08/2009)DANH SÁCH ĐẠI BIỂUTT Họ và tên CQCT Email I1234567891011Trần ThịAnNguyễn BáÂnLê HoàngAnhNguyễnPhươngDuy AnhNguyễnTuấn AnhPhan ĐứcAnhNguyễnHuy BằngNguyễnQuang BáuTrần NgọcBíchNguyễnDương BồHoàng NgọcCầmVVL, HNVVL, HNĐHBK, HNCĐSP BìnhDươngViện KHKTHNVVL, HNĐH VinhĐHKHTN, HNĐHSP HuếĐHSP HN IIVVL, HNttan@grad.iop.vast.ac.vnnban@iop.vast.ac.vnanhlh-ksclc@mail.hut.edu.vnnguyenphuongduyanh@yahoo.comanh@vaec.gov.vnpdanh@grad.iop.vast.ac.vnbangnguyen@vinhuni.edu.vnnguyenquangbau@yahoo.comngocbich410@yahoo.comnguyenduongbo@gmail.comhncam@iop.vast.ac.vn1213141516171819Đinh XuânCấpPhan HoàngChươngBạch ThànhCôngNguyễnChínhCươngNguyễnTiến CườngNguyễnNhư ĐạtNguyễn ĐứcDiệuĐinhNguyênDinhĐHSP HN IIĐHCNTT,ĐHQG HCMĐHKHTN, HNĐHSP, HNphchuong.uit@gmail.comcongbt@vnu.edu.vncuongnc@hnue.edu.vnĐHKHTN, HN ngtiencuong@gmail.comVVL, HNĐHKHTN,HCMVVL, HNnndat@iop.vast.ac.vnnddieuphys@gmail.comdndinh@iop.vast.ac.vn20 Lê Đình ĐH Huế dinhle52@gmail.com212223242526Đặng HữuĐịnhLê VănĐoàiPhùng VănĐồngTrươngMinh ĐứcPhạm ThùyDungHoàngDũngCĐCN TuyHoàĐH VinhVVL, HNĐH HuếVNCĐT, TH,TDHdanghuudinh41@gmail.comlevandoai81@ymail.compvdong@iop.vast.ac.vntyduc@yahoo.comdungpt1612@gmail.comĐHQG, HCM hdung@vnuhcm.edu.vnThành phố Đồng Hới (03- 06/8/2009) Trang 87/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 88/ 102

272829303132333435363738394041TrầnNguyênDũngHoàngPhương HàNguyễnBích HàĐặngThanh HảiTrần ThịHảiNguyễnHữu HảiTrần ThịHảiNguyênSuân HãnNguyễn ThịHằngPhó ThịNguyệtHằngNguyễnĐình HiênNguyễn ThịThu HiềnHồ KhắcHiếuNguyễnNgọc HiếuNguyễn VănHiếuVVL HNĐH Huếnguyendung.physics@gmail.comtyduc@yahoo.comVKHCNVN bichha@iop.vast.ac.vnPhòng QLXB-TTTTNXBGDVNhaiphysic@yahoo.comĐHQG, HN tranhait@gmail.comĐHKHTN, HNhuuhai78@gmail.comĐHQG, HN tranhait@gmail.comĐHQG HNĐHSP, HNĐHBK HNDự bịĐHTWNTlienbat76@gmail.comdinhhienphysics@gmail.comĐHSP, HN thuhien.hnue@gmail.comĐHXD, HNChuyên LQĐĐHKHTN, HNhieudh@gmail.comhieunguyenvly@yahoo.comnguyenvanhieudn@gmail.comvanhieuht82@yahoo.com424344Nguyễn VănHiệuNguyễn VănHoaNguyễn VănHóaVKHCNVNĐHSP HCMVKHKTQSnvhieu@iop.vast.ac.vnnguyenngocty1182@yahoo.comhoquy1253@yahoo.com45 Lê Viết Hòa ĐHSP, HN hoalv@hnue.edu.vn464748495051525354555657Trần TháiHòaNguyễn ThịXuân HoàiHoàngQuốc HoànNguyễnQuốc HoànLê VănHoàngLê VănHoàngNguyễnQuang HọcBùi ĐìnhHợiĐào ThịHồngPhan ThịThanhHồngNguyễn VănHợpHà ThanhHùngĐHSP, HN IIĐH HuếĐPSP, HNĐHBK, HNthaihoavlsp@yahoo.comtyduc@yahoo.comhoangquochoancbt@gmail.comnguyenquochoan@hotmail.comĐHSP, HCM hoanglv2005@gmail.comĐHSP, HCM hoanglv2005@gmail.comĐHSP, HN hocnq@hnue.edu.vnĐHXD, HNVVL, HNĐHSP HN IIĐHSP, HNVVL HNbuidinhhoi@gmail.comdthong@iop.vast.ac.vnhopnvdhsp@yahoo.comhthung@grad.iop.vast.ac.vnThành phố Đồng Hới (03- 06/8/2009) Trang 89/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 90/ 102

58Trần LêHùngPTTH CửaTùng, QThungletran_hungletran@yahoo.com74NguyễnNhư LêĐH Huếnaspears@yahoo.comledhh@yahoo.com59Vũ VănHùngĐHSP HNbangvu57@yahoo.com75Đỗ PhươngLiênĐHBK, HNanhlh-ksclc@mail.hut.edu.vn60Lê TháiHưngĐHKHTN, HNhunglethai191182@yahoo.com.vn76Phan HồngLiênHVKTQSpnhue2000@yahoo.com61Lê VănHưngĐH Huế hungk16@gmail.com77Nguyễn VănLiễnVVL HNnvlien@iop.vast.ac.vn62Nguyễn ThịThu HươngĐHKHTN, HNnguyenhuong1982@yahoo.com78Lê Thị HàLinhVVL, HNlinhlth@ims.vast.ac.vn63Trịnh ThịHươngTHPT Chu VănAntthuong@iop.vast.ac.vn79Nguyễn ChíLinhĐHKHTN,HCMnclinhcaohock15@gmail.com64Vũ ThúyHườngVVL, HNvuhuong@grad.iop.vast.ac.vn80NguyễnHoàng LinhĐHKHTN, HNlinknh@gmail.com65Phạm CôngHuyVVL, HN pchuy1906@gmail.com81Trần PhanThùy LinhĐH Huếthuylinh.tranphan@gmail.com66 Piere JouyEcole Normale,Parispierre.jouy@voila.fr82Nguyễn ThịHà LoanĐHSP HN IIhloansp2@gmail.com67Phan HồngKhiêmĐHKHTN,HCMphanhongkhiem@gmail.com83Phan ThịKim LoanĐH Cần Thơptkimloan@gmail.com68Đinh XuânKhoaĐH Vinh khoadhv@yahoo.com84Trương ThịNgọc LoanĐHKHTN,HCMngamrong@gmail.com69Đinh PhanKhôiĐH Vinhdpkhoi@grad.iop.vast.ac.vn85DươngXuân LongVVL, HNdxlong@iop.vast.ac.vn70NguyễnCông KiênĐHKHTN, HNhanvuduonghau@gmail.com86Hoàng NgọcLongVVL, HNnhlong@iop.vast.ac.vn71Phạm HữuKiênĐHBK, HNhuukienphan@yahoo.com87MargaritaA. Man’koFIAN, Moskvammanko@sci.lebedev.ru72Võ ThànhLâmĐH Sài Gònphonghueuni2000@gmail.com88Vladimir I.Man’koFIAN, Moskvamanko@sci.lebedev.ru73Nguyễn TríLânVVL, HNntlan@iop.vast.ac.vn89Nguyễn ViếtMinhĐHBK, HNminhnv@mail.hut.edu.vnThành phố Đồng Hới (03- 06/8/2009) Trang 91/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 92/ 102

90919293949596979899100Trịnh VănMùngLê VănNamPhạm ThịThanh NgaTrần ThịNgaNguyễn VănNghĩaHoàng VănNgọcThái ThịMinhNguyệtĐỗ HữuNhaNguyễn ThịThùyNhungPhan ThịCẩm NhungBenedictO’Donnell101 Võ Văn Ớn102103104Trần CôngPhongNguyễn VănPhúHuỳnh VĩnhPhúcĐHBK, HNFICHĐHTL, HNHV PKKQĐHKHTN, HNĐHKHTN, HNĐH VinhĐHSP, HNVVL, HNĐHSP,HCMEcole Normale,ParisTHPT TânPhước KhánhĐHSP Huếmungtv76@gmail.comlvnam19@yahoo.comthanhngapt2001@yahoo.comnghiangv@yahoo.comConmai.bonghinh@gmail.comnguyen@ifpan.edu.plminhnguyet84us@yahoo.comanh.cpt@gmail.comntnhung@iop.vast.ac.vnphannhungphysics@gmail.combenedict.odonnell@polytechnique.eduvovanon1963@gmail.comcongphong2000@yahoo.comĐH Vinh vphuvnu@yahoo.comĐH Đồng Tháp hoangphuong2710@gmail.com105106107108109110111112113114115116117118119Cao HuyPhươngĐặngNguyênPhươngLê Thị ThuPhươngNgô ThịThuPhươngNguyễnHồngQuangQuách KhảQuangHồ QuangQuýVũ NgọcSáuBounyavongSengthongĐặng VănSoaĐỗ HoàngSơnHồ CôngSơnNguyễn HảiSơnNguyễnHùng SơnTrần BắcSơnĐH HùngVươngĐH KHTN,HCMĐHSP HuếVVL, HNVVL, HNĐH Đồng ThápVKHKTQSĐH VinhVVL, HNĐHSP, HNĐHKHTNHCMcaohuyphuongvlpt@yahoo.com.vndnphuong1984@yahoo.com.vnthuphuonghueuni@gmail.comntphuong@grad.iop.vast.ac.vnnhquang@iop.vast.ac.vnqttquang@yahoo.comhoquy1253@yahoo.comnghuybang@yahoo.comsengthong@grad.iop.vast.ac.vndvsoa@assoc.iop.vast.ac.vnsondo01@gmail.comVKHVL sonhc@ims.vast.ac.vnEcole Normale,ParisVVL, HNĐHKHTN,HCMhai.son.nguyen@lpa.ens.frtbson87@gmail.comThành phố Đồng Hới (03- 06/8/2009) Trang 93/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 94/ 102

120121122123124125126127128129130131132133134Đinh ThanhTâmNguyễn ThịThanh TâmNguyễnQuốc TháiNguyễn ĐứcThắngNguyễnToàn ThắngNguyễn ĐứcThắngNgô VănThanhĐỗ ĐìnhThanhLưu ThịKim ThanhThái DoãnThanhPhạmHươngThảoNguyễnHuy ThảoNguyễnMinh ThảoNguyễnViễn ThọLê NguyễnMinhThôngĐHTB, TâyBắcĐH QuảngNamĐH Đồng ThápTHPT Ứng HòaB Hà NộiVVL, HNVVL HNVVL, HNĐHSP HNĐHSP, HN IIdinhthanhtam@taybacuniversity.edu.vnthanhtamvl@qnamuni.edu.vnthaibinhk28@gmail.comthang2710@yahoo.comntthang@iop.vast.ac.vnha_thu27784@yahoo.comnvthanh@iop.vast.ac.vnluuthikim.thanh@yahoo.comCĐCNTP HCM zthanh76@yahoo.comĐHKHTN, HNĐHSP HNĐHSP, HNhuongthao19822002@yahoo.comthaonm@aivietnam.netĐHBK, HN thonv-iep@mail.hut.edu.vnVVL, HCM thong_nho_20@yahoo.com135136137138139140141142143144145146147148149Nguyễn ThịHà ThuNguyễnKhắcThuậnNguyễn VănThuậnVõ VănThuậnLê NhưThụcNguyễn ThịThươngTrần ThanhThúyNguyễn ThịLệ ThủyĐỗ Thị ThuThủyHoàng VănTíchHoàng ĐìnhTiếnĐinh VănTìnhTruongNguyenTranHoàng ĐìnhTriểnNguyễnCảnh TrungHV PKKQHV PKKQĐHSP, HNha_thu27784@yahoo.comkhacthuan85@gmail.comthuanvatli@yahoo.comVKHKTHN vvthuan@vaec.gov.vnĐHSP, HNVVL, HNĐPSP, HNĐH HuếĐHCN, CẩmPhảĐHSP, HNĐH VinhĐHKTKT CNEcolePolytechnique,ParisĐHKHTN, HNĐH Vinhnhuthucvnn@gmail.comntthuong@grad.iop.vast.ac.vnttthuy@iop.vast.ac.vnthuy05481@gmail.comthuthuy5585@gmail.comhoangtich48@yahoo.com.vntienkct@yahoo.comtinhcnnd@gmail.comtruong@cpht.polytechnique.frhoangtrien@gmail.comThành phố Đồng Hới (03- 06/8/2009) Trang 95/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 96/ 102

150Phạm QuốcTrungĐHKHTN,HCMphamquoctrungkhtn@gmail.com151 Lê Tuấn ĐHBK, HN letuan_2002@yahoo.com152NguyễnAnh TuấnĐHKHTN HNtuanna@vnu.edu.vn153NguyễnMinh TuấnĐHBK, Tomsknguyentangminhtuan@yahoo.com154NguyễnNgọc TuấnVVL, HNnntuan@grad.iop.vast.ac.vn155156157Lương VănTùngNguyễnThanhTùngVũ NgọcTướcĐH Đồng ThápTTKHKT&CNQS,BQPĐHBK, HNdhspdtvantung@yahoo.comtung_iapsi1808@yahoo.comtuocvungoc@mail.hut.edu.vn158NguyễnNgọc TyĐHSP, HCMnguyenngocty1182@gmail.com159Tăng ThịBích VânĐHSP, HCMphuthuyxulanh@gmail.com160Sivong XayVetpanyVVL, HN limkinvet@yahoo.com161Đinh QuangVinhĐHSP, HNvinhhitech@yahoo.com.vn162Lê ThếVinhĐHSPKT, Vinh ltvinh.skv@moet.edu.vn163Nguyễn DuyVỹVVL, HCMnguyenduyvy@gmail.com164NguyễnNhư XuânHV KHKT QSxuan_76@yahoo.com165Vũ Thị HảiYếnVVL HNvhyen@iop.vast.ac.vnThành phố Đồng Hới (03- 06/8/2009) Trang 97/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 98/ 102

DANH SÁCH TÊN VIẾT TẮTĐHKHTN HNĐại học Khoa học tự nhiên Hà NộiTên cơ quan viết tắtCĐCNTP HCMCĐCN Tuy HoàCĐSP Bình DươngChuyên LQĐĐH Cần ThơĐH Đồng ThápĐH HuếĐH Hùng VươngĐH Quảng NamĐH Sài GònĐH VinhĐHBK HNĐHBK, TomskĐHCN, Cẩm PhảĐHCNTT, ĐHQG HCMĐHKHTN HCMTên cơ quan đầy đủTrường Cao đẳng công nghiệp thựcphẩm Thành phố Hồ Chí MinhTrường Cao đẳng công nghiệp Tuy HoàCao đẳng Sư phạm Bình DươngTrường chuyên Lê Quý ĐônTrường Đại học Cần ThơĐại học Đồng ThápĐại học HuếĐại học Hùng VươngĐại học Quảng NamĐại học Sài GònĐại học VinhĐại học Bách Khoa Hà NộiĐại học bách khoa Tomsk, thành phốTomsk, Liên bang NgaĐại học Công nghiệp Cẩm PhảĐại Học Công Nghệ Thông Tin, ĐạiHọc Quốc Gia Tp. Hồ Chí MinhĐại học Khoa học Tự nhiên Hồ ChíMinhĐHKTKT CNĐHQG HNĐHQG, HCMĐHSP HCMĐHSP HNĐHSP HN IIĐHSP HuếĐHSP, HCMĐHSPKT, VinhĐHTB, Tây BắcĐHTL, HNĐHXD, HNDự bị ĐHTWNTEcole Normale, ParisEcole Normale, ParisEcole Normale, ParisEcole Polytechnique,ParisĐại học Kinh tế kỹ thuật Công nghiệpĐại học Quốc gia Hà NộiBan Khoa học Công nghệ, Đại họcQuốc gia Hồ Chí MinhĐại học sư phạm Hồ Chí MinhĐại học Sư phạm Hà NộiĐại học Sư phạm Hà Nội IIĐại học Sư phạm HuếĐại học Sư phạm Hồ Chí MinhĐại học Sư phạm kỹ thuật VinhĐại học Tây BắcĐại học Thủy LợiĐại học xây dựng Hà NộiDự bị đại học Trung ương Nha TrangLabolatoire Piere Aigrain –Despartement de physique – EcoleNormale Supérieure de ParisLaboratoire Matériaux et PhénomènesQuantiques, Université Paris Diderot,CNRSLaboratoire PICM Ecole Polytechnique,ParisEcole Polytechnique, ParisThành phố Đồng Hới (03- 06/8/2009) Trang 99/ 102Thành phố Đồng Hới (03- 06/8/2009) Trang 100/ 102

FIAN, MoskvaFIAN, MoskvaFICHHV KHKT QSP.N. Lebedev Physical InstituteP.N. Lebedev Physical InstituteFICHHọc viện kỹ thuật Quân sựHV PKKQ Học viện Phòng không - Không quânPhòng QLXB-TTTTNXBGDVNPTTH Cửa Tùng, QTTHPT Chu Văn AnTHPT Tân Phước KhánhTHPT Ứng Hòa B HàNộiTT KHKT&CNQS, BQPVKHCNVNVKHKTHNVKHKTQSVKHKTQSVKHVLVNCĐT, TH, TDHVVL HCMVVL HNPhòng QLXB-TTTT NXBGDVNTrường PTTH Cửa Tùng, Quảng TrịTrường Trung học phổ thông Chu VănAnTrung học Phổ thông Tân Phước KhánhTrường PTTH Ứng Hòa B Hà NộiTrung tâm KHKT&CNQS, Bộ QuốcphòngViện Khoa học và Công nghệ Việt NamViện Khoa học kỹ thuật hạt nhânViện Khoa học kỹ thuật quân sựViện Khoa học kỹ thuật quân sựViện Khoa học Vật liệuViện nghiên cứu Điện tử, Tin học, Tựđộng hóaViện Vật lý, Hồ Chí MinhViện Vật lýThành phố Đồng Hới (03- 06/8/2009) Trang 101/ 102 Thành phố Đồng Hới (03- 06/8/2009) Trang 102/ 102