Implementation of Symanzik's Improvement Program for Simulations of Dynamical Wilson Fermions in Lattice QCD

Details Implementation of Symanzik's Improvement Program for Simulations of Dynamical Wilson Fermions in Lattice QCD Implementation of Symanzik's Improvement Program for Simulations of Dynamical Wilson Fermions in Lattice QCD

1996-03-14

arxiv.org/abs/hep-lat/9603008v2

Comput.Phys.Commun. 99 (1997) 221-234

Physics

High Energy Physics

High Energy Physics - Lattice

uuencoded gzipped tar-file, Latex2e source file, 6 Figures, 22 pages, one reference added

Scientific paper

10.1016/S0010-4655(96)00128-2

We discuss the implementation of a Sheikholeslami-Wohlert term for simulations of lattice QCD with dynamical Wilson fermions as required by Symanzik's improvement program. We show that for the Hybrid Monte Carlo or Kramers equation algorithm standard even-odd preconditioning can be maintained. We design tests of the implementation using analytically and numerically computed cumulant expansions. We find that, for situations where the average number of Conjugate Gradient iterations exceeds 200, the overhead is only about 20%.

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