Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-11-12
Phys.Lett. B508 (2001) 392-398
Physics
High Energy Physics
High Energy Physics - Theory
13 pages, Latex
Scientific paper
10.1016/S0370-2693(01)00509-3
We identify two distinct, complementary gauge field configurations for QCD with SU(2) gauge group, one (instanton-like configurations) having to do with chiral symmetry breaking but not with confinement, the other (regularized Wu-Yang monopoles) very likely responsible for confinement but unrelated to chiral symmetry breaking. Our argument is based on a semiclassical analysis of fermion zero modes in these backgrounds, made by use of a gauge field decomposition recently introduced by Faddeev and Niemi. Our result suggests that the two principal dynamical phenomena in QCD, confinement and chiral symmetry breaking, are distinct effects, caused by two competing classes of gauge field configurations.
Konishi Kenichi
Takenaga Kazunori
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