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Holographic QCD Running Coupling for Light Quarks in Strong Magnetic Field
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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.
Forward citations
Cited by 3 Pith papers
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Quantization Rules in Holographic QCD Models
A generalized WKB/Bohr-Sommerfeld quantization rule is derived for holographic QCD potentials with an infinite boundary barrier and applied to scalar and vector fields in the soft-wall model, matching shooting-method ...
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Interplay of magnetic field and chemical potential induced anisotropy and frame dependent chaos of a $Q\bar{Q}$ pair in holographic QCD
In a holographic QCD model, chaotic string dynamics appear only for unstable configurations near the horizon, and magnetic field and chemical potential affect chaos oppositely in string and Einstein frames.
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Phase Diagram Magnetic Features of Holographic Anisotropic Model for $z^4$-term Heavy Quarks
The z^4 anisotropic holographic heavy-quark model exhibits direct magnetic catalysis in both its first-order phase transition and its temporal-Wilson-loop crossover, and the string tension weakens sharply with magnetic field.
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