Inverse magnetic catalysis in the soft-wall model of AdS/QCD

Danning Li*, Mei Huang, Yi Yang, Pei Hung Yuan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Magnetic effects on chiral phase transition have been investigated in a modified soft-wall AdS/QCD model, in which the dilaton field is taken to be negative at the ultraviolet region and positive at the infrared region as in Phys. Rev.D 93 (2016) 101901 and JHEP04 (2016) 036. The magnetic field is introduced into the background geometry by solving the Einstein-Maxwell system. After embedding the magnetized background geometry into the modified soft-wall model, the magnetic field dependent behavior of chiral condensate is worked out numerically. It is found that, in the chiral limit, the chiral phase transition remains as a second order at finite magnetic field B, while the symmetry restoration temperature and chiral condensate decrease with the increasing of magnetic field in small B region. When including finite quark mass effect, the phase transition turns to be a crossover one, and the transition temperature still decreases with increasing magnetic field B when B is not very large. In this sense, inverse magnetic catalysis effect is observed in this modified soft-wall AdS/QCD model.

Original languageEnglish
Article number30
JournalJournal of High Energy Physics
Volume2017
Issue number2
DOIs
StatePublished - 1 Feb 2017

Keywords

  • Gauge-gravity correspondence
  • Holography and quark-gluon plasmas
  • Phase Diagram of QCD

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