Cold magnetized quark matter at finite density in a nonlocal chiral quark model

Abstract

We study the behavior of two-flavor dense quark matter under the influence of an external magnetic field in the framework of a nonlocal chiral quark model with separable interactions. The nonlocality is incorporated in the model by using a Gaussian form factor. It is found that for low and moderate values of magnetic field there is a decrease of the critical chiral restoration chemical potential ${\mu }_c$, i.e. an inverse magnetic catalysis effect is observed. For larger values of $eB$ the behavior of ${\mu }_c$ becomes more or less flat, depending on the parametrization. Within the considered parametrization range we do not find a significant growth of the critical chemical potential for large magnetic fields, as occurs in the case of the local NJL model.

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Cited by in corpus (3)

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• Quark matter phase diagram under the influence of strong magnetic fields with a nonlocal chiral model
• Finite-Size Effects on the Critical End Point of Magnetized Quark Matter in the Nonlocal PNJL Model