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How parameters and regularization affect the PNJL model phase diagram and thermodynamic quantities

Abstract : We explore the phase diagram and the critical behavior of QCD thermodynamic quantities in the context of the so-called Polyakov--Nambu--Jona-Lasinio model. We show that this improved field theoretical model is a successful candidate for studying the equation of state and the critical behavior around the critical end point. We argue that a convenient choice of the model parameters is crucial to get the correct description of isentropic trajectories. The effects of the regularization procedure in several thermodynamic quantities is also analyzed. The results are compared with simple thermodynamic expectations and lattice data.
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http://hal.in2p3.fr/in2p3-00589077
Contributor : Sylvie Flores <>
Submitted on : Wednesday, April 27, 2011 - 2:23:48 PM
Last modification on : Tuesday, November 19, 2019 - 2:46:53 AM

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Pedro Costa, H. Hansen, M. C. Ruivo, C. A. de Sousa. How parameters and regularization affect the PNJL model phase diagram and thermodynamic quantities. Physical Review D, American Physical Society, 2010, 81, pp.016007. ⟨10.1103/PhysRevD.81.016007⟩. ⟨in2p3-00589077⟩

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