Properties of Hot Quark Matter with Neutrino Confinement In the NJL Model

TL;DR

This study explores the thermodynamic properties of hot, neutrino-confined three-flavor quark matter using the NJL model, analyzing how neutrinos influence pressure and energy at various temperatures and densities.

Contribution

It provides a detailed analysis of the thermodynamics of neutrino-confined quark matter within the NJL model, including flavor mixing effects and comparisons with neutrino-free states.

Findings

Neutrinos significantly affect the pressure and energy of hot quark matter.

Constituent quark masses and condensates vary with temperature and density.

Flavor mixing impacts the equation of state of quark matter.

Abstract

The thermodynamic characteristics of hot $\beta$-equilibrium three-flavor quark matter with neutrino confinement are studied in terms of the local SU(3) Nambu-Jona-Lasinio (NJL) model, which also accounts for the 't Hooft interaction which leads to mixing of quark flavors. For different temperatures $T \in [20 \div 100]$ MeV and baryon number densities $n_B \in [0 \div 1.8]$ fm$^{-3}$ the constituent quark masses, quark condensates, and relative contributions of individual types of particles to the pressure and chemical potentials of the constituent particles are determined. In order to determine the role of neutrinos in the hot quark matter, the pressures and energies in states with and without neutrinos are compared. Keywords: hot quark matter: neutrino confinement: NJL model: equation of state.