Deconfinement in the presence of a strong magnetic background: an exercise within the MIT bag model
arXiv:1201.5881 · doi:10.1103/PhysRevD.86.016008
Abstract
We study the effect of a very strong homogeneous magnetic field B on the thermal deconfinement transition within the simplest phenomenological approach: the MIT bag pressure for the quark- gluon plasma and a gas of pions for the hadronic sector. Even though the model is known to be crude in numerical precision and misses the correct nature of the (crossover) transition, it provides a simple setup for the discussion of some subtleties of vacuum and thermal contributions in each phase, and should provide a reasonable qualitative description of the critical temperature in the presence of B. We find that the critical temperature decreases, saturating for very large fields.
7 pages, 4 figures; v2: clarifications and references added; v3: improved discussion and new section on renormalization subtleties, to appear in PRD
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