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Type: Journal article
Title: Nonperturbative QCD, gauge-fixing, Gribov copies and the lattice
Author: Williams, A.
Citation: Progress of Theoretical Physics Supplement, 2003; 151(1):154-160
Publisher: Progress Theoretical Physics Publication Office
Issue Date: 2003
ISSN: 0375-9687
Statement of
Anthony G. Williams
Abstract: Perturbative QCD uses the Faddeev-Popov gauge-fixing procedure, which leads to ghosts and the local BRST invariance of the gauge-fixed perturbative QCD action. In the asymptotic regime, where perturbative QCD is relevant, Gribov copies can be neglected. In the nonperturbative regime, one must adopt either a nonlocal Gribov-copy free gauge (e.g., Laplacian gauge) or attempt to maintain local BRST invariance at the expense of admitting Gribov copies. These issues are explored. In addition, we discuss the relationship between recent Dyson-Schwinger based model calculations of the infrared behavior of QCD Green's functions and the lattice calculation of these quantities.
Description: Copyright (c) Progress of Theoretical Physics 2003 All rights reserved. Printed in U.S.A. Submitted to Cornell University’s online archive in 2007 by Anthony G. Williams. Post-print sourced from
RMID: 0020030930
DOI: 10.1143/PTPS.151.154
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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