https://doi.org/10.1140/epja/s10050-023-01078-5
Regular Article - Theoretical Physics
Inverse magnetic catalysis and size-dependent effects on the chiral symmetry restoration
1
Instituto de Física, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil
2
Faculdade de Física, Universidade Federal do Sul e Sudeste do Pará, 68505-080, Marabá, PA, Brazil
3
Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, 46071, Valencia, Spain
Received:
9
February
2023
Accepted:
7
July
2023
Published online:
15
July
2023
We investigate the combined finite-size and thermo-magnetic effects on the properties of the quark matter, in the context of the two-flavored Nambu–Jona-Lasinio model. In particular, by using the mean-field approximation and the Schwinger proper time method in a toroidal topology with periodic or antiperiodic conditions, we evaluate the chiral phase transition, the constituent quark mass and the thermal and spatial susceptibilities under the change of the size, temperature and strength of external magnetic field. To take into account the inverse magnetic catalysis phenomenon, we make use of a recently proposed magnetized coupling constant. The findings suggest that the observables are strongly affected by the variation of the variables and also by the periodicity of the boundary conditions, with the final outcomes depending on the balance of these competing phenomena.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
