CENTER DOMINANCE AND Z(2) VORTICES IN SU(2) LATTICE GAUGE-THEORY

Citation
L. Deldebbio et al., CENTER DOMINANCE AND Z(2) VORTICES IN SU(2) LATTICE GAUGE-THEORY, Physical review. D. Particles and fields, 55(4), 1997, pp. 2298-2306
Citations number
23
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
05562821
Volume
55
Issue
4
Year of publication
1997
Pages
2298 - 2306
Database
ISI
SICI code
0556-2821(1997)55:4<2298:CDAZVI>2.0.ZU;2-4
Abstract
We find, in close analogy to Abelian dominance in the maximal Abelian gauge, the phenomenon of center dominance in the maximal center gauge for SU(2) lattice gauge theory. The maximal center gauge is a gauge-fi xing condition that preserves a residual Z(2) gauge symmetry; ''center projection'' is the projection of SU(2) link variables onto Z(2) cent er elements, and ''center dominance'' is the fact that;the center-proj ected link elements carry most of the information about the string ten sion of the full theory. We present numerical evidence that the thin Z (2) vortices Of the projected configurations are associated with ''thi ck'' Z(2) vortices in the unprojected configurations. The evidence als o suggests that the thick Z(2) vortices may play a significant role in the confinement process.