Fate of Vector Dominance in the Effective Field Theory

Details Fate of Vector Dominance in the Effective Field Theory Fate of Vector Dominance in the Effective Field Theory

2001-05-31

arxiv.org/abs/hep-ph/0105335v2

Phys.Rev.Lett. 87 (2001) 152001

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures. One reference added. Minor modification to shorten the manuscript. This is the version to appear in Physic

Scientific paper

10.1103/PhysRevLett.87.152001

We reveal the full phase structure of the effective field theory for QCD, based on the hidden local symmetry (HLS) through the one-loop renormalization group equation including quadratic divergences. We then show that vector dominance (VD) is not a sacred discipline of the effective field theory but rather an accidental phenomenon peculiar to three-flavored QCD. In particular, the chiral symmetry restoration in HLS model takes place in a wide phase boundary surface, on which the VD is realized nowhere. This suggests that VD may not be valid for chiral symmetry restoration in hot and/or dense QCD.

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