slides - Lattice Seminar - Desy

More documents

Recommendations

Info

Single Term from Scalar Meson Decay - 192 Inversions All-to-all Propagators in Lattice Hadron Spectrum Calculations John Bulava 1 Scalar Decay,V=12 3 x96, for the Chosen Dilution Scheme No. of Interlace Projectors in [t,v,s][t,v,s] for the labels(1 st [] is t 0 -t 1 ,2 nd [] is t 0 -t 0 ) [96,12,4][96,12,4](dist) [96,6,4][12,4,4] Background Distillation - An Exact All-to-all Method Variance- Reduced Stochastic LapH (VRSL) Re(-C(τ)) 0.1 0.01 0.001 0 5 10 15 20 25 τ John Bulava All-to-all Propagators in Lattice Hadron Spectrum Calculations
VRSL Conclusions All-to-all Propagators in Lattice Hadron Spectrum Calculations John Bulava Background Distillation - An Exact All-to-all Method Variance- Reduced Stochastic LapH (VRSL) VRSL is more efficient than conventional dilution. For a fixed number of inversions, VRSL gives a considerably lower error. The smeared subspace is low-dimensional, so the gauge-noise (σ g ) limit can be obtained with a MUCH smaller number of projectors. Unlike exact method, volume dependence seems mild. A moderate level of dilution projectors works for disconnected terms. John Bulava All-to-all Propagators in Lattice Hadron Spectrum Calculations
Page 1 and 2: All-to-all Propagators in Lattice H
Page 3 and 4: Outline All-to-all Propagators in L
Page 5 and 6: Lattice QCD Background All-to-all P
Page 7 and 8: The Need For All-to-all Propagators
Page 9 and 10: Outline All-to-all Propagators in L
Page 11 and 12: Volume Dependence All-to-all Propag
Page 13 and 14: It’s All About the Operators All-
Page 15 and 16: Nucleon (JB) and Delta (E. Engelson
Page 17 and 18: N f = 2 + 1 Results: I G = 1 − an
Page 19 and 20: Stochastic All-to-all All-to-all Pr
Page 21 and 22: VRSL vs. Conventional Dilution All-
Page 23 and 24: Same-Time (‘Disconnected’) Diag
Page 25: Disc. Term from σ Meson Correlator

slides - Lattice Seminar - Desy

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?