Conformal Phase Transition and Fate of the Hidden Local Symmetry in Large Nf QCD
Masayasu Harada, Koichi Yamawaki
Abstract
It is observed that the Hidden Local Symmetry (HLS) for the vector mesons in the ordinary QCD with smaller Nf plays the role of the "Higgsed magnetic gauge symmetry" for the Seiberg duality in the SUSY QCD. For large Nf where the conformal phase transition with chiral restoration and deconfinement is expected to take place, we find that the HLS model also exhibits the chiral restoration by the loop corrections (including the quadratic divergence) in a manner similar to that in the CPN-1 model, provided that the bare HLS Lagrangian respects the Georgi's vector limit at a certain Nf (≈ 7).
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