Thermal Width of Quarkonium from Holography

TL;DR

This paper uses holography to study how charge and finite coupling corrections influence the thermal width of heavy quarkonium, revealing that decreasing coupling reduces the width, aligning with weakly coupled plasma results.

Contribution

It introduces a holographic analysis of charge and finite coupling effects on quarkonium thermal width, incorporating Maxwell charge, $ ext{R}^4$ terms, and Gauss-Bonnet gravity.

Findings

Charge and finite coupling corrections significantly impact the thermal width.

Decreasing 't Hooft coupling effectively reduces the thermal width.

Results align with analogous weakly coupled plasma calculations.

Abstract

From the AdS/CFT correspondence, the effects of charge and finite 't Hooft coupling correction on the thermal width of a heavy quarkonium are investigated. To study the charge effect, we consider Maxwell charge which is interpreted as quark medium. In the case of finite 't Hooft coupling corrections, $\mathcal{R}^4$ terms and Gauss-Bonnet gravity have been considered, respectively. It is shown that these corrections affect the thermal width. It is also argued that by decreasing the 't Hooft coupling, the thermal width becomes effectively smaller. Interestingly, this is similar to analogous calculations in weakly coupled plasma.