Quark-Hadron Phase-Transition in an Extended NJL Model with Scalar-Vector Interaction

Abstract

The quark-hadron phase transition at finite temperature and baryon chemical potential is investigated in an extended NJL model with scalar-vector eight-point interaction by comparing the pressure of symmetric nuclear matter with that of the quark matter. As a result, the extended NJL phase diagram is obtained in the temperature-baryon chemical potential plane and the effects of the scalar-vector coupling constant G_{sv}^q on the chiral phase transition are summarized. It is shown that a quarkyonic-like phase in which the chiral symmetry is restored but the elementary excitation modes are nucleonic appears just before deconfinement in this model.

15 pages, 12 figures

References in corpus (5)

• Color superconductivity in dense quark matter
• The phase diagram of dense QCD
• Baryons and the phase diagram for a large number of colors and flavors
• Quark matter in neutron stars within the Nambu - Jona-Lasinio model and confinement
• First Order Quark-Hadron Phase Transition in the NJL-Type Nuclear and Quark Model

Cited by in corpus (8)

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• Repulsive Vector Interaction in Three Flavor Magnetized Quark and Stellar Matter
• Symmetry energy and neutron star properties in the saturated Nambu-Jona-Lasinio model
• Hadron-quark phase transition: the QCD phase diagram and stellar conversion
• The QCD critical point from the Nambu-Jona-Lasino model with a scalar-vector interaction
• Masses of the lowest spin-0 and spin-1 meson nonets: explicit symmetry breaking effects
• Thermal conductivity of the quark matter for the SU(2) light-flavor sector
• Symmetry potentials and in-medium nucleon-nucleon cross sections within the Nambu-Jona-Lasinio model in relativistic impulse approximation