Holographic model for light quarks in anisotropic hot dense QGP with external magnetic field

Irina Ya. Aref’eva; Alexey Ermakov; Kristina Rannu; Pavel Slepov

doi:10.1140/epjc/s10052-022-11166-3

2022 Impact factor 4.4

Particles and Fields

Open Access

Eur. Phys. J. C (2023) 83: 79
https://doi.org/10.1140/epjc/s10052-022-11166-3

Regular Article - Theoretical Physics

Holographic model for light quarks in anisotropic hot dense QGP with external magnetic field

Irina Ya. Aref’eva, Alexey Ermakov, Kristina Rannu^c and Pavel Slepov

Steklov Mathematical Institute, Russian Academy of Sciences, Gubkina str. 8, 119991, Moscow, Russia

^c rannu-ka@rudn.ru

Received: 10 July 2022
Accepted: 23 December 2022
Published online: 27 January 2023

Abstract

We present a five-dimensional twice anisotropic holographic model supported by Einstein-dilaton-three-Maxwell action describing light quarks. The first of the Maxwell fields provides finite chemical potential. The second Maxwell field serves for anisotropy, characterizing spatial anisotropy of the QGP produced in heavy-ion collisions (HIC). The third Maxwell field is related to a magnetic field that appears in HIC. The dependence of the 5-dim black hole solution and confinement/deconfinement phase diagram on this magnetic field is considered. The effect of the inverse magnetic catalyses for light quarks phase diagram is obtained. Positions of critical end points are found. We also study the behavior of the conductivity for light quarks in both isotropic and anisotropic cases and show that behaviour of the conductivity near critical points essentially depend on quark masses, meanwhile at high temperature they are similar.

© The Author(s) 2023

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