paper

Critical Temperature of Chiral Symmetry Restoration for Quark Matter with a Chiral Chemical Potential

arXiv:1602.05250 · doi:10.1088/0954-3899/43/12/125101

Abstract

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

Section 3.2 added. To appear on Journal of Physics G

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