We investigate the phase diagram of the so-called Polyakov--Nambu--Jona-Lasinio model at finite temperature and nonzero chemical potential with three quark flavors. Chiral and deconfinement phase transitions are discussed, and the relevant order-like parameters are analyzed. A special attention is payed to the critical end point (CEP): the influence of the strangeness on the location of the CEP is studied; also the strength of the flavor-mixing interaction alters the CEP location, once when it becomes weaker the CEP moves to low temperatures and can even disappear.
@article{arxiv.1112.6306,
title = {The QCD Critical End Point in the Context of the Polyakov--Nambu--Jona-Lasinio Model},
author = {Pedro Costa and C. A. de Sousa and M. C. Ruivo and H. Hansen},
journal= {arXiv preprint arXiv:1112.6306},
year = {2015}
}
Comments
Prepared for Strangeness in Quark Matter 2011, Sept. 18--24, Cracow, Poland