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arXiv · 1409.6175

The QCD critical end point driven by an external magnetic field in asymmetric quark matter

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

The effect of the isospin/charge asymmetry and an external magnetic field in the location of the critical end point (CEP) in the QCD phase diagram is investigated. By using the 2+1 flavor Nambu--Jona-Lasinio model with Polyakov loop (PNJL), it is shown that the isospin asymmetry shifts the CEP to larger baryonic chemical potentials and smaller temperatures, and in the presence of a large enough isospin asymmetry the CEP disappears. Nevertheless, a sufficiently high external magnetic field can drive the system into a first order phase transition again.

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Pedro Costa, Márcio Ferreira, Constança Providência, Hubert Hansen, Débora P. Menezes. 2014-09-22. The QCD critical end point driven by an external magnetic field in asymmetric quark matter. https://doi.org/10.3204/desy-proc-2014-04/75

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