Magnetic catalysis and inverse magnetic catalysis in nonlocal chiral quark models

Abstract

We study the behavior of strongly interacting matter under an external constant magnetic field in the context of nonlocal chiral quark models within the mean field approximation. We find that at zero temperature the behavior of the quark condensates shows the expected magnetic catalysis effect, our predictions being in good quantitative agreement with lattice QCD results. On the other hand, in contrast to what happens in the standard local Nambu-Jona-Lasinio model, when the analysis is extended to the case of finite temperature our results show that nonlocal models naturally lead to the Inverse Magnetic Catalysis effect.

14 pages, 3 figures. References added, Fig. 3 enlarged including new results. To be published in Physical Review D

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• Finite-volume and magnetic effects on the phase structure of the three-flavor Nambu--Jona-Lasinio model
• Strong magnetic fields in nonlocal chiral quark models
• Topological susceptibility, divergent chiral density and phase diagram of chirally imbalanced QCD medium at finite temperature
• Thermoelectric properties of (an-)isotropic QGP in magnetic fields
• Light pseudo-scalar meson masses under strong magnetic fields within the SU(3) Nambu-Jona-Lasinio model
• Strong-interaction matter under extreme conditions from chiral quark models with nonlocal separable interactions
• Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
• Properties of magnetized neutral pions at zero and finite temperature in nonlocal chiral quark models
• Deformed QCD phase structure and entropy oscillation in the presence of a magnetic background
• Fluctuations of order parameter in an $SU(N_c)$ effective model
• Studying explicit $U(1{)}_A$ symmetry breaking in hot and magnetised two flavour non-local NJL model constrained using lattice results
• Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: the role of axial vector mesons
• Properties of neutral mesons in a hot and magnetized quark matter: size-dependent effects
• Color, Flavor, Temperature and Magnetic Field Dependence of QCD Phase Diagram: Magnetic Catalysis and its Inverse
• QCD phase diagram in the $T-eB$ plane for varying pion mass
• Effects of the temperature and magnetic-field dependent coupling on the properties of QCD matter
• Critical behaviour of an effective relativistic mean field model in the presence of magnetic background and boundaries
• Effects of strangeness on the chiral pseudocritical line
• Inverse magnetic catalysis and size-dependent effects on the chiral symmetry restoration
• Deconfinement in the presence of a strong magnetic field
• Strongly interacting matter in extreme magnetic fields
• Thermal Field Theory in the Presence of a Background Magnetic Field and its Application to QCD
• Boundary conditions and electromagnetic effects on the phase transition of a zero spin bosonic system
• Finite-Size Effects on the Critical End Point of Magnetized Quark Matter in the Nonlocal PNJL Model
• The role of the pion mass on the QCD phase diagram in the $T-eB$ plane