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The QCD critical end point in the PNJL model
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Orientador(es)
Resumo(s)
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. We present the phase diagram where the inclusion of the Polyakov loop moves the critical points to higher temperatures, compared with the NJL model results. 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. The results with the PNJL model are closer to lattice results and we also recover the universal behavior of the critical exponents of both the baryon susceptibility and the specific heat.
Descrição
Palavras-chave
QCD (Quantum Chromodynamics) PNJL (Polyakov–Nambu–Jona-Lasinio Model) PNJL model Polyakov loop
Contexto Educativo
Citação
P. Costa, C. A. de Sousa, M. C. Ruivo and H. Hansen (2009). The QCD critical end point in the PNJL model. European Physical Society Letters (EPL), 86(3), 1-12. https://doi.org/10.1209/0295-5075/86/31001
Editora
IOP Publishing
Licença CC
Sem licença CC