Holographic QCD Running Coupling for Light Quarks in Strong Magnetic Field

Abstract

We consider running coupling constant in holographic model with external magnetic field supported by Einstein-dilaton-three-Maxwell action. We obtain a significant dependence of the running coupling constant $\alpha$ on chemical potential, temperature and magnetic field. We use the boundary condition that ensures the agreement with lattice calculations of string tension between quarks at zero chemical potential. The location of the 1st order phase transitions in $(\mu ,T)$-plane does not depend on the dilaton boundary conditions. We observe that running coupling $\alpha$ decreases with increasing magnetic field for the fixed values of chemical potential and temperature. At the 1st order phase transitions the functions $\alpha$ undergo jumps depending on temperature, chemical potential and magnetic field.

19 Pages, 5 figures, 1 Appendix, Published in Phys.Rev.D

References in corpus (6)

• Exploring improved holographic theories for QCD: Part II
• Hydrodynamic Models for Heavy Ion Collisions
• QCD Running Couplings and Effective Charges
• The QCD phase diagram and Beam Energy Scan physics: a theory overview
• Holographic model for light quarks in anisotropic hot dense QGP with external magnetic field
• Magnetic Catalysis in Holographic Model with Two Types of Anisotropy for Heavy Quarks

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