Quark mass effects in the thermodynamical properties of an extended (P)NJL model

Abstract

We analyze the thermodynamical properties of a system of strongly interacting particles at vanishing quark chemical potential in the framework of a recently developed extension of the Polyakov-Nambu-Jona-Lasinio Model. In addition to eight quark interactions terms, non-canonical terms which explicitly break chiral symmetry up to the same order in a $1/N_c$ expansion ($N_c$ number of colors) are included. A recently proposed Polyakov potential is considered and the results are compared to lattice QCD data resulting in a favorable scenario for the recent model variants.

arXiv commentTo appear in the proceedings of "8th International Conference on Quarks and Nuclear Physics (QNP2018)"

References in corpus (15)

• The equation of state in (2+1)-flavor QCD
• Full result for the QCD equation of state with 2+1 flavors
• Chiral effective model with the Polyakov loop
• Polyakov loop, diquarks and the two-flavour phase diagram
• Phase diagrams in the three-flavor Nambu--Jona-Lasinio model with the Polyakov loop
• Fluctuations of conserved charges at finite temperature from lattice QCD
• Fluctuations and Correlations of net baryon number, electric charge, and strangeness: A comparison of lattice QCD results with the hadron resonance gas model
• PNJL model with a Van der Monde term
• Multi-quark interactions with a globally stable vacuum
• Effects of eight-quark interactions on the hadronic vacuum and mass spectra of light mesons
• Thermodynamic potential with correct asymptotics for PNJL model
• Effective multi-quark interactions with explicit breaking of chiral symmetry
• Light Quark Masses in Multi-Quark Interactions
• Reparametrizing the Polyakov$-$Nambu$-$Jona-Lasinio model
• Thermodynamical properties of strongly interacting matter in a model with explicit chiral symmetry breaking interactions