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

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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Submitted on : Tuesday, December 22, 2015 - 8:23:16 AM
Last modification on : Thursday, March 15, 2018 - 11:40:10 AM

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P. Costa, M. Ferreira, C. Providência, H. Hansen, D.P. Menezes. The QCD critical end point driven by an external magnetic field in asymmetric quark matter. 20th International Conference on Particles and Nuclei (PANIC 14), Aug 2014, Hambourg, Germany. ⟨10.3204/DESY-PROC-2014-04/75⟩. ⟨in2p3-01247446⟩

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