Deconfinement and chiral phase transitions in quark matter with a strong electric field

Abstract

The deconfinement and chiral phase transitions are studied in the context of the electrized quark matter at finite temperature in the two-flavor Polyakov-Nambu-Jona-Lasinio model. Using the mean field approximation and an electric field independent regularization we show that the effect of temperature and/or electric fields is to partially restore the chiral symmetry. The deconfinement phase transition is slightly affected by the magnitude of the electric field. To this end we show how the effective quark masses and the expectation value of the Polyakov loop are affected by the electric fields at finite temperatures. As a very interesting result, the pseudocritial temperatures for chiral symmetry restoration and deconfinement decrease as we increase the magnitude of the electric fields, however, both start to increase after some critical value of the electric field.

Effects of quark anomalous magnetic moment on the thermodynamical properties and mesonic excitations of magnetized hot and dense matter in PNJL model

“…PNJL model has been extensively used to study the deconfinement and chiral symmetry restoration in the presence of a background electromagnetic field [57][58][59][60][61][62][63]. In [57] it is shown that the external magnetic field is likely to strengthen the chiral condensate resulting an increase of transition temperature compared to the zero field case in agreement with the previous studies on magnetic catalysis(MC) in NJL-like models.…”

“…The modification of the phase structure of the model due to chiral chemical potential, which mimics the chirality induced by topological excitations according to the QCD anomaly relation, has also been discussed [57]. In [63], it has been observed that though the electric field partially restores the chiral symmetry, the deconfinement phase transition is marginally affected. Recent lattice results [4,35,36,64] shows that although, at low temperature the magnetic field catalyzes the chiral condensate, at higher values of the temperature the opposite trend is observed.…”

Thermal corrections to the gluon magnetic Debye mass

“…When this is not the case, an electric field emerges, whose origin comes from boosting different system's elements to the medium rest frame. The simultaneous treatment of magnetic and electric field effects on medium's properties has been recently considered in the context of asymmetric collisions or event-by-event fluctuations in heavy-ion reactions [23]. Electromagnetic effects have also been studied using chiral kinetic theory with Landau level transitions induced by both boosts and rotations [24].…”

Phenomenological study of the anisotropic quark matter in the 2-flavor Nambu-Jona-Lasinio model

“…[27,32]) that at higher baryon chemical potential, a first-order transition may exsit, which ends at a critical end point (CEP), which is of second order phase transition point. Furthermore, the effects of rotation [33,34], the magnetic field effects [35][36][37][38][39][40], finite-volume effects [41][42][43][44][45][46][47][48][49][50], non-extensive effects [51][52][53][54], external electric fields [55][56][57][58], the effects of chiral chemical potential [59][60][61][62] also have been considered in the effective models to provide a better insight in the QCD phase transition of a more realsitic QCD plasma.…”