Effective models of two-flavor QCD: finite μ and mq-dependence

Preprint number: CP3-Origins-2010-27
Authors: Topi Kahara (Jyväskylä University and Helsinki Inst. of Physics) and Kimmo Tuominen (CP3-Origins and Helsinki Inst. of Physics)
External link: arXiv.org

We study effective models of chiral fields and Polyakov loop expected to describe the dynamics responsible for the phase structure of two-flavor QCD at finite temperature and density. We consider chiral sector described either using linear sigma model or Nambu-Jona-Lasinio model and study the phase diagram and determine the location of the critical point as a function of the explicit chiral symmetry breaking (i.e. the bare quark mass m_q). We also discuss the possible emergence of the quarkyonic phase in this model.