Chiral Symmetry Breaking and Restoration in (2+1) Dimensions from Holography: Magnetic and Inverse Magnetic Catalysis
arXiv:1807.11822 · doi:10.1103/PhysRevD.98.106007
Abstract
We study the chiral symmetry breaking and restoration in -dimensional gauge theories from the holographic hard and softwall models. We describe the behavior of the chiral condensate in the presence of an external magnetic field for both models at finite temperature. For the hardwall model we find Magnetic Catalysis (MC) in different set ups. For the softwall model we find Inverse Magnetic Catalysis (IMC) and MC in different situations. We also find for the softwall model a crossover transition from IMC to MC at a pseudocritical magnetic field. This study also shows spontaneous symmetry breaking for both models. Interestingly, for in the softwall model we found a nontrivial expectation value for the chiral condensate.
arXiv commentV2: 24 pages, 18 figures. Text improved. Typos corrected. New subsection created. New figures added. New references added. Results unchanged. This version matches the published one in PRD
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