Journal
PHYSICS LETTERS B
Volume 731, Issue -, Pages 154-158Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2014.02.028
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Funding
- Helmholtz International Center for FAIR
- Alliance Program of the Helmholtz Association [HA216/EMMI]
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We explore the parameter space of the two-flavor thermal quark-meson model and its Polyakov loop-extended version under the influence of a constant external magnetic field B. We investigate the behavior of the pseudo critical temperature for chiral symmetry breaking taking into account the likely dependence of two parameters on the magnetic field: the Yukawa quark-meson coupling and the parameter To of the Polyakov loop potential. Under the constraints that magnetic catalysis is realized at zero temperature and the chiral transition at B = 0 is a crossover, we find that the quark-meson model leads to thermal magnetic catalysis for the whole allowed parameter space, in contrast to the present picture stemming from lattice QCD. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
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