Symmetry 2010, 2(3), 1338-1374; doi:10.3390/sym2031338
Review

Phase Diagram and Critical Properties within an Effective Model of QCD: The Nambu–Jona-Lasinio Model Coupled to the Polyakov Loop

Pedro Costa 1,2,* email, Maria C. Ruivo 1 , Célia A. De Sousa 1  and Hubert Hansen 3
1 Centro de Física Computacional, Departamento de Física , Universidade de Coimbra, P-3004-516 Coimbra, Portugal 2 E.S.T.G., Instituto Politécnico de Leiria, Morro do Lena-Alto do Vieiro, 2411-901 Leiria, Portugal 3 IPNL, Université de Lyon/Université Lyon 1, CNRS/IN2P3, 4 rue E.Fermi, F-69622 Villeurbanne Cedex, France
* Author to whom correspondence should be addressed.
Received: 19 March 2010; in revised form: 27 May 2010 / Accepted: 2 July 2010 / Published: 6 July 2010
(This article belongs to the Special Issue Symmetry Breaking Phenomena)
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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, μB) 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.
Keywords: chiral symmetry; phase transition; restoration of symmetry

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MDPI and ACS Style

Costa, P.; Ruivo, M.C.; De Sousa, C.A.; Hansen, H. Phase Diagram and Critical Properties within an Effective Model of QCD: The Nambu–Jona-Lasinio Model Coupled to the Polyakov Loop. Symmetry 2010, 2, 1338-1374.

AMA Style

Costa P, Ruivo MC, De Sousa CA, Hansen H. Phase Diagram and Critical Properties within an Effective Model of QCD: The Nambu–Jona-Lasinio Model Coupled to the Polyakov Loop. Symmetry. 2010; 2(3):1338-1374.

Chicago/Turabian Style

Costa, Pedro; Ruivo, Maria C.; De Sousa, Célia A.; Hansen, Hubert. 2010. "Phase Diagram and Critical Properties within an Effective Model of QCD: The Nambu–Jona-Lasinio Model Coupled to the Polyakov Loop." Symmetry 2, no. 3: 1338-1374.

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