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

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.

preprint2014arXivOpen access
Pedro CostaMárcio FerreiraHubert HansenDébora P. MenezesConstança Providência
hep-phnucl-th
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Pedro CostaMárcio FerreiraHubert HansenDébora P. MenezesConstança Providência

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