Eur. Phys. J. A (2019) 55: 108
https://doi.org/10.1140/epja/i2019-12793-3

Regular Article - Theoretical Physics

Critical behaviour of an effective relativistic mean field model in the presence of magnetic background and boundaries

Instituto de Física, Universidade Federal da Bahia, 40210-340, Salvador, BA, Brazil

^* e-mail: luciano.abreu@ufba.br

Received: 1 February 2019
Accepted: 4 June 2019
Published online: 12 July 2019

Abstract

In the present work we investigate the combined influence of magnetic background and boundaries on the thermodynamic properties of effective relativistic mean field models, like the so-called Walecka model. This is done by making use of generalized zeta-function approach and mean-field approximation at effective chemical equilibrium, focusing on the dependence with the size of compactified spatial dimension, the temperature and the magnetic field strength. The findings suggest a rich phase structure in the parameter space. The maintenance of long-range correlations is strongly affected under the change of these parameters, with the symmetric phase being favoured due to both inverse magnetic catalysis effect and the reduction of size of compactified dimension.