The QCD Critical End Point in the Context of the Polyakov--Nambu--Jona-Lasinio Model

Abstract

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.

Prepared for Strangeness in Quark Matter 2011, Sept. 18--24, Cracow, Poland

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Cited by in corpus (1)

• The presence of a critical end point in the QCD phase diagram from the net-baryon number fluctuations