# Phase diagram and critical properties within an effective model of QCD: the Nambu-Jona-Lasinio model coupled to the Polyakov loop

Abstract : We investigate the phase diagram of the so-called Polyakov--Nambu--Jona-Lasinio model at finite temperature and non-zero chemical potential with three quark flavors. Chiral and deconfinement phase transitions are discussed and the relevant order-like parameters are analyzed. The results are compared with simple thermodynamic expectations and lattice data. We present the phase diagram in the ($T,\,\mu_B)$ plane, paying special attention to the critical end point: as the strength of the flavor-mixing interaction becomes weaker, the critical end point moves to low temperatures and can even disappear.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00589071
Contributor : Sylvie Flores <>
Submitted on : Wednesday, April 27, 2011 - 2:20:30 PM
Last modification on : Thursday, June 17, 2021 - 3:19:01 PM

### Citation

Pedro Costa, M. C. Ruivo, C. A. de Sousa, H. Hansen. Phase diagram and critical properties within an effective model of QCD: the Nambu-Jona-Lasinio model coupled to the Polyakov loop. Symmetry, MDPI, 2010, 3, pp.1338-1374. ⟨10.3390/sym2031338⟩. ⟨in2p3-00589071⟩