Dense quark–gluon plasma in strong magnetic fields

Abstract

A non-perturbative (np) method of Field correlators (FCM) was applied to study QCD at temperatures above the deconfinement transition (1 < T /T c < 3, T c ∼ 0.16 GeV) and nonzero baryon densities (baryon chemical potential μ B < 0.5 GeV) in an external uniform magnetic field (eB < 0.5 GeV 2 ). Within FCM, the np hightemperature dynamics is embodied in the Polyakov loop and in the Debye mass due to the Color-Magnetic confinement. Analytic expressions for quark pressure and magnetic susceptibility were obtained. The expressions were represented as series and in integral form. Magnetic susceptibility was found to increase rapidly with temperature and slowly with density. The results at the zero density limit are in agreement with lattice data.

Effect of interactions on the topological expression for the chiral separation effect

“…We disregard here influence of external magnetic field on configurations of gluonic fields B [76]. As a result the gluonic field correlators .…”

“…In order to clarify this we calculate the non -perturbative contributions to CSE conductivity using method of field correlators developed by Yu.A. Simonov and collaborators [25,[73][74][75][76][77][78][79][80][81]. At the values of µ and T around T c the SU (3) coupling constant is α s (T c ) ≈ 0.3, and the perturbative corrections are expected to contribute by amount of about 30 per cent.…”

Thermodynamics of PNJL at zero temperature in a strong magnetic field

“…The integral in the effective thermodynamics potential is not convergent. In literature, the Fock-Schwinger propertime method [42] is applied to a thermal field theory to obtain the exact expression of the effective potential with B-dependent divergent part in the vacuum regularization [43][44][45]. Another equivalent method is the magnetic field independent vacuum regularization (MFIR), which is widely employed in the recent work [46][47][48][49][50][51][52].…”