✦ LIBER ✦

Implementation of Symanzik's improvement program for simulations of dynamical Wilson fermions in lattice QCD

✍ Scribed by Karl Jansen; Chuan Liu

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 843 KB
Volume: 99
Category: Article
ISSN: 0010-4655
DOI: 10.1016/s0010-4655(96)00128-2

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✦ Synopsis

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%.