Heavy Probes in Strongly Coupled Plasmas With Chemical Potential

TL;DR

This paper investigates the behavior of heavy probes in strongly coupled plasmas with finite chemical potential using gauge/gravity duality, revealing universal features relevant for quark-gluon plasma studies.

Contribution

It introduces a class of gravity models with Reissner-Nordström black holes to analyze heavy quark probes at finite chemical potential, highlighting universal behaviors.

Findings

Screening distance shows insensitivity to model details

Universal behavior observed across different deformations

Results applicable to heavy quarkonia in quark-gluon plasma

Abstract

We study the properties of heavy probes moving in strongly coupled plasmas at finite chemical potential. Using the gauge/gravity duality we consider large classes of gravity models consisting in deformed AdS5 spacetimes endowed with Reissner-Nordstr\"om-type black holes. We report on our analysis of the screening distance of a quark-antiquark pair, its free energy, and the running coupling. These observables show a certain insensitivity as to which model and deformation is used, pointing to strong-coupling universal behavior. Thus, the results may be relevant for modeling heavy quarkonia traversing a quark-gluon plasma at finite net baryon density, and their suppression by melting.