PNJL model at zero temperature: The three-flavor case

Autor(es)

Mattos, O. A. ^[1] ; Frederico, T. ^[1] ; Lenzi, C. H. ^[1] ; Dutra, M. ^[1] ; Lourenco, O. ^[1]

Afiliação do(s) autor(es)

^[1] Inst Tecnol Aeronaut, Dept Fis, DCTA, BR-12228900 Sao Jose Dos Campos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physical Review D; v. 104, n. 11 DEC 2 2021.
• Citações Web of Science: 0

Resumo

We propose a three-flavor version of the Polyakov-Nambu-Jona-Lasino (PNJL) model at zero temperature regime, by implementing a traced Polyakov loop (Phi) dependence in the scalar, vector and `t Hooft channel strengths. We study the thermodynamics of this model, named as PNJL0, with special attention for the fast-order confinement/deconfinement phase transition for which Phi is the order parameter. For the symmetric quark matter case, an interesting feature observed is a strong reduction of the constituent strange quark mass (M-s) at the chemical potential related to point where deconfinement takes place. The emergence of (Phi) favors the restoration of chiral symmetry even for the strange quark. We also investigate the charge neutral system of quarks and leptons in weak equilibrium. As an application, we construct a hadronquark phase transition with a density dependent hadronic model coupled to the SU(3) PNJL0 model. In this case, the quark side is composed by dcconfined particles. This approach is used to determine mass-radius profiles compatible with recent data from the Neutron Star Interior Composition Explorer mission. (AU)

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