English

QCD condensates with flavor SU(3) symmetry breaking

High Energy Physics - Phenomenology 2007-05-23 v1

Abstract

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:[<sˉσμνGμνs><uˉ\sigmaμνGμνu>]1/5=0.87[<\bar{s}\sigma_{\mu\nu}G^{\mu\nu}s><\bar{u}\sig ma_{\mu\nu}G^{\mu\nu}u>]^{1/5}=0.87. It turns out that the dimensional parameter m02=<qˉσμνGμνq>/<qˉq>=1.601.92GeV2m^2_0=<\bar{q} \sigma_{\mu\nu}G^{\mu\nu}q>/ <\bar{q}q> =1.60\sim 1.92 {\rm GeV}^2.

Keywords

Cite

@article{arxiv.hep-ph/0605093,
  title  = {QCD condensates with flavor SU(3) symmetry breaking},
  author = {Seung-il Nam and Hyun-Chul Kim},
  journal= {arXiv preprint arXiv:hep-ph/0605093},
  year   = {2007}
}

Comments

4 pages, 2 figures, Talk given at YITP international workshop "Hadrons at finite density (HFD06)" Kyoto, Japan, 20~22 Feb 2006