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The QCD critical end point in the PNJL model

Abstract : We investigate the role played by the Polyakov loop in the dynamics of the chiral phase transition in the framework of the so-called PNJL model in the SU(2) sector. The results are compared with those of the NJL model. We present the phase diagram in terms of the chemical potential and temperature. The inclusion of the Polyakov loop moves the critical points to higher temperatures. The critical properties of physical observables, such as the baryon number susceptibility and the specific heat, are analyzed in the vicinity of the critical end point, with special focus on their critical exponents.
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http://hal.in2p3.fr/in2p3-00215934
Contributor : Dominique Girod <>
Submitted on : Thursday, January 24, 2008 - 10:37:58 AM
Last modification on : Tuesday, November 19, 2019 - 2:41:12 AM

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P. Costa, C.A. de Sousa, M.C. Ruivo, H. Hansen. The QCD critical end point in the PNJL model. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2009, 86, pp.31001. ⟨10.1209/0295-5075/86/31001⟩. ⟨in2p3-00215934⟩

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