Critical temperature of chiral symmetry restoration for quark matter with a chiral chemical potential

2016/02/29 by M. Ruggieri, Marco Ruggieri, Guang-Xiong Peng +1
Physics and Astronomy · #Chiral anomaly #Chiral symmetry #Chiral symmetry breaking #Critical phenomena #High-Energy Particle Collisions Research #Nambu–Jona-Lasinio model #Particle physics #Particle physics theoretical and experimental studies #Phase transition #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Strange matter #hep-lat #hep-ph

paper · pdf · doi:10.1088/0954-3899/43/12/125101

Section 3.2 added. To appear on Journal of Physics G

openalex created_date 2016/06/24 · arxiv created 2016/09/27 · openalex publication_date 2016/10/25 · arxiv updated 2016/11/23 · openalex updated_date 2026/08/05

Abstract

In this article we study the restoration of chiral symmetry at a finite temperature for quark matter with a chiral chemical potential, , by means of a nonlocal Nambu–Jona–Lasinio model. This model allows the introduction of, in the simplest way possible, a Euclidean momentum, p E , dependent quark mass function which decays (neglecting logarithms) as for large p E , in agreement with the asymptotic behaviour expected in quantum chromodynamics in the presence of a nonperturbative quark condensate. We focus on the critical temperature for chiral symmetry restoration in the chiral limit, T c , versus , as well as on the order of the phase transition. We find that T c increases with , and that the transition remains of the second order for the whole range of considered.

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