Phase diagram of hot magnetized two-flavor color superconducting quark matter

TL;DR

This paper investigates the phase structure of hot, magnetized two-flavor color superconducting quark matter using a NJL model, revealing a threshold magnetic field where LLL dominates and T, mu effects are mitigated.

Contribution

It provides a comprehensive phase diagram analysis of 2SC quark matter under magnetic fields, temperature, and chemical potential, highlighting the dominance of the lowest Landau level at high magnetic fields.

Findings

Identified a threshold magnetic field eB_t~ 0.5 GeV^2 where LLL dominates.

Mapped the phase diagrams in T-mu, mu-eB, and T-eB spaces for various parameters.

Showed that high magnetic fields partly compensate for temperature and chemical potential effects.

Abstract

A two-flavor color superconducting (2SC) Nambu--Jona-Lasinio (NJL) model is introduced at finite temperature T, chemical potential mu and in the presence of a constant magnetic field eB. The effect of (T,mu,eB) on the formation of chiral and color symmetry breaking condensates is studied. The complete phase portrait of the model in T-mu, mu-eB, and T-eB phase spaces for various fixed eB, T, and mu is explored. A threshold magnetic field eB_t~ 0.5 GeV^2 is found above which the dynamics of the system is solely dominated by the lowest Landau level (LLL) and the effects of T and mu are partly compensated by eB.