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Title: Phase diagram and critical properties within an effective model of QCD: the Nambu-Jona-Lasinio model coupled to the Polyakov loop
Authors: Costa, Pedro 
Ruivo, M. C. 
Sousa, Célia A. de 
Hansen, H. 
Keywords: chiral symmetry; phase transition; restoration of symmetry
Issue Date: 8-Jul-2010
Publisher: MDPI
Project: Centro de Física Computacional and F.C.T. under Project No. CERN/FP/83644/2008 
Serial title, monograph or event: Symmetry
Volume: 2
Issue: 3
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.
Description: 46 pages, 11 figures, 3 tables
ISSN: 2073-8994
DOI: 10.3390/sym2031338
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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