The Imaginary Potential and Thermal Width of Moving Quarkonium from Holography

TL;DR

This paper investigates how finite 't Hooft coupling corrections influence the imaginary potential and thermal width of moving heavy quarkonium using holographic methods, revealing that corrections reduce the thermal width and affect quark-antiquark interactions.

Contribution

It introduces the effects of $ ^4$ and Gauss-Bonnet gravity corrections on quarkonium properties within the holographic framework, extending previous static analyses to moving states.

Findings

Imaginary potential appears at smaller quark-antiquark distances with corrections.

Thermal width decreases when including finite coupling corrections.

Results align with weakly coupled plasma calculations.

Abstract

We study the effect of finite 't Hooft coupling corrections on the imaginary potential and the thermal width of a moving heavy quarkonium from the AdS/CFT correspondence. To study these corrections, we consider $\mathcal{R}^4$ terms and Gauss$-$Bonnet gravity. We conclude that the imaginary potential of a moving or static heavy quarkonium starts to be generated for smaller distances of quark and antiquark. Similar to the case of static heavy quarkonium, it is shown that by considering the corrections the thermal width becomes effectively smaller. The results are compared with analogous calculations in a weakly coupled plasma.