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Type: Journal article
Title: Topological charge evolution in the Markov chain of QCD
Author: Leinweber, D.
Williams, A.
Zhang, J.
Lee, F.
Citation: Physics Letters B: Nuclear Physics and Particle Physics, 2004; 585(1-2):187-191
Publisher: Elsevier Science BV
Issue Date: 2004
ISSN: 0370-2693
Statement of
Derek B. Leinweber, Anthony G. Williams, Jian-Bo Zhang and Frank X. Lee
Abstract: The topological charge is studied on lattices of large physical volume and fine lattice spacing. We illustrate how a parity transformation on the SU(3) link-variables of lattice gauge configurations reverses the sign of the topological charge and leaves the action invariant. Random applications of the parity transformation are proposed to traverse from one topological charge sign to the other. The transformation provides an improved unbiased estimator of the ensemble average and is essential in improving the ergodicity of the Markov chain process.
Description: Copyright © 2004 Elsevier B.V. All rights reserved. Printed in U.S.A. Submitted to Cornell University’s online archive in 2004 by Jianbo Zhang. Post-print sourced from
DOI: 10.1016/j.physletb.2004.02.008
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