(Non)-perturbative properties of high-T QCD from lattice ... - Physics

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F. Karsch, xQCD, July 2008 – p. 2/32Introduction: sQGPmatter created at RHIC is a dense, strongly interacting systemDoes the coupling at finite temperature become large?Are exotic bound states in the QGP responsible for largeinteraction cross sections?Is the QGP a liquid?Can the QGP be described in terms of a conformal field theory?overview on perturbative and non-perturbative features of the QGP
Thermal scales in QCDthe hard scale: p ∼ Tthermal modes, bulk thermodynamics, eg. pressurepT 4 = a SBf p (g(T))the soft scale: p ∼ gTstatic color-electric modes, eg. Debye screening√m D (T)g(T)T = N c3 + n f6 + n ( ) 2f µq· f2π 2 E (g(T))Tthe ultra-soft scale: p ∼ g 2 Tstatic color-magnetic modes, eg. spatial string tension√σsg 2 (T)T = c Mf M (g(T))F. Karsch, xQCD, July 2008 – p. 3/32
Page 1: F. Karsch, xQCD, July 2008 - p. 1/3
Page 7 and 8: Screening of heavy quark free energ
Page 9 and 10: Non-perturbative Debye screeninglea
Page 11 and 12: Non-perturbative Debye screeningµ
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Page 17 and 18: Singlet free energyand asymptotic f
Page 21 and 22: The pressure revisitedT> ∼(2-3)T
Page 29 and 30: Christian Schmidt (for RBC-Bielefel
Page 31 and 32: Quark number in Boltzmann approxima
Page 39 and 40: χ-symmetry restoration300250χ-sym
Page 41 and 42: Deconfinement and χ-symmetryand bu
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(Non)-perturbative properties of high-T QCD from lattice ... - Physics

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