https://doi.org/10.1140/epja/s10050-021-00463-2
Regular Article - Theoretical Physics
Cold magnetized quark matter at finite density in a nonlocal chiral quark model
1
Departamento de Física, Comisión Nacional de Energía Atómica, Av. Libertador 8250, 1429, Buenos Aires, Argentina
2
CONICET, Godoy Cruz 2290, Buenos Aires, Argentina
3
Departamento de Física, Facultad de Ciencias Exactas, IFLP, CONICET, Universidad Nacional de La Plata, C.C. 67, 1900, La Plata, Argentina
Received:
27
February
2021
Accepted:
9
April
2021
Published online:
21
April
2021
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 
, i.e. an inverse magnetic catalysis effect is observed. For larger values of eB the behavior of 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.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
