Fate of Vector Dominance in the Effective Field Theory
High Energy Physics - Phenomenology
2009-11-07 v2 High Energy Physics - Theory
Nuclear Theory
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0105335,
title = {Fate of Vector Dominance in the Effective Field Theory},
author = {Masayasu Harada and Koichi Yamawaki},
journal= {arXiv preprint arXiv:hep-ph/0105335},
year = {2009}
}
Comments
4 pages, 3 figures. One reference added. Minor modification to shorten the manuscript. This is the version to appear in Physical Review Letters