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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Cited by in corpus (9)

• Thermodynamics of 2+1 Flavor Polyakov-Loop Quark-Meson Model under External Magnetic Field
• 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
• Strong-interaction matter under extreme conditions from chiral quark models with nonlocal separable interactions
• 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
• Critical behaviour of an effective relativistic mean field model in the presence of magnetic background and boundaries
• Effects of the temperature and magnetic-field dependent coupling on the properties of QCD matter