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arXiv · 1307.7894

Phase transition and critical end point driven by an external magnetic field in asymmetric quark matter

Pedro Costa·Márcio Ferreira·Hubert Hansen·Débora P. Menezes·Constança Providência
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Abstract

The location of the critical end point (CEP) in the QCD phase diagram is determined under different scenarios. The effect of strangeness, isospin/charge asymmetry and an external magnetic field is investigated. The discussion is performed within the 2+1 flavor Nambu--Jona-Lasinio model with Polyakov loop. It is shown that isospin asymmetry shifts the CEP to larger baryonic chemical potentials and smaller temperatures. At large asymmetries the CEP disappears. However, a strong enough magnetic field drives the system into a first order phase transition.

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Pedro Costa, Márcio Ferreira, Hubert Hansen, Débora P. Menezes, Constança Providência. 2013-07-30. Phase transition and critical end point driven by an external magnetic field in asymmetric quark matter. https://doi.org/10.1103/physrevd.89.056013

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