Orientation Dependence of Confinement-Deconfinement Phase Transition in Anisotropic Media

TL;DR

This paper investigates how the orientation of quark pairs affects the confinement-deconfinement phase transition in anisotropic media created in heavy-ion collisions, using holographic methods and anisotropic black brane solutions.

Contribution

It introduces a holographic approach with anisotropic black branes to study orientation-dependent phase transitions in the QCD phase diagram.

Findings

Confinement/deconfinement crossover depends on quark pair orientation.

Dynamical wall locations vary with temperature and chemical potential.

Anisotropy influences the phase transition characteristics.

Abstract

We study the T-{\mu} phase diagram of anisotropic media, created in heavy-ion collisions (HIC). Such a statement of the problem is due to several indications that this media is anisotropic just after HIC. To study T-{\mu} phase diagram we use holographic methods. To take into account the anisotropy we use an anisotropic black brane solutions for a bottom-up QCD approach in 5-dim Einstein-dilaton-two-Maxwell model constructed in our previous work. We calculate the minimal surfaces of the corresponding probing open string world-sheet in anisotropic backgrounds with various temperatures and chemical potentials. The dynamical wall (DW) locations, providing the quark confinement, depend on the orientation of the quark pairs, that gives a crossover transition between confinement/deconfinement phases in the dual gauge theory.