Phase Diagram, Scalar-Pseudoscalar Meson Behavior and Restoration of Symmetries in (2+1) Polyakov-Nambu-Jona-Lasinio Model

Abstract

We explore the phase diagram and the modification of mesonic observables in a hot and dense medium using the (2+1) Polyakov-Nambu-Jona-Lasinio model. We present the phase diagram in the ($T,{\mu }_B$)-plane, with its isentropic trajectories, paying special attention to the chiral critical end point (CEP). Chiral and deconfinement transitions are examined. The modifications of mesonic observables in the medium are explored as a tool to analyze the effective restoration of chiral symmetry for different regions of the phase diagram. It is shown that the meson masses, namely that of the kaons, change abruptly near the CEP, which can be relevant for its experimental search.

arXiv comment25 pages, 11 figures, 2 tables

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Cited by in corpus (8)

• Effects of quark anomalous magnetic moment on the thermodynamical properties and mesonic excitations of magnetized hot and dense matter in PNJL model
• Hot QCD at finite isospin density: confronting SU(3) Nambu-Jona-Lasinio model with recent lattice data
• Isentropic evolution of the matter in heavy-ion collisions and the search for the critical endpoint
• Functional renormalization group study of the critical region of the quark-meson model with vector interactions
• Effects of finite volume and magnetic fields on thermodynamic properties of quark matter and fluctuations of conserved charges
• The strange critical endpoint and isentropic trajectories in an Extended PNJL Model with Eight Quark Interactions
• One-meson-loop NJL model: Effect of collective and noncollective excitations on the quark condensate at finite temperature
• Pseudoscalar mesons from a PNJL model at zero temperature