T-mu quark matter phase transitions and critical endpoint in nonlocal PNJL models under a strong magnetic field

JUAN PABLO CARLOMAGNO; S.A. FERRARIS; DANIEL GOMEZ DUMM; ANA G. GRUNFELD

Physical Review D

American Physical Society

Año: 2023 vol. 108

We study the T − μ phase diagram of quark matter under the influence of a strong uniform magneticfield in the framework of a nonlocal extension of the Polyakov–Nambu–Jona-Lasinio model (PNJL). The existence of a critical endpoint (CEP) is found for the whole considered range of the magnetic field (up to 1 GeV2). We analyze the location of this CEP as a function of the external field and discuss the presence of inverse magnetic catalysis for nonzero chemical potentials. Our results show that the temperature of the CEP decreases with the magnetic field, in contrast to the behavior observed in local NJL/PNJL models.