1307.7894 (Pedro Costa et al.)

Phase transition and CEP driven by an external magnetic field in
asymmetric quark matter    [PDF]

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

The location of the critical end point (CEP) in the QCD phase diagram is determined under different scenarios. The effect of strangeness, isopsin/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 (PNJL). 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 will drive the system into a first order phase transition.

View original: http://arxiv.org/abs/1307.7894