QCD condensates with flavor SU(3) symmetry breaking
Abstract
Description
We investigate the effects of flavor SU(3)-symmetry breaking on the QCD condensates, based on the nonlocal effective chiral action from the instanton vacuum, focusing on the quark-gluon mixed one. We employ two different parameterizations for the dependence of the momentum-dependent dynamical quark mass on the strange current quark mass. We obtain the ratios of the mixed condensates:$[<\bar{s}σ_{μν}G^{μν}s><\bar{u}\sig ma_{μν}G^{μν}u>]^{1/5}=0.87$. It turns out that the dimensional parameter $m^2_0=<\bar{q} σ_{μν}G^{μν}q>/ <\bar{q}q> =1.60\sim 1.92 {\rm GeV}^2$.
4 pages, 2 figures, Talk given at YITP international workshop "Hadrons at finite density (HFD06)" Kyoto, Japan, 20~22 Feb 2006
4 pages, 2 figures, Talk given at YITP international workshop "Hadrons at finite density (HFD06)" Kyoto, Japan, 20~22 Feb 2006