Back reaction effects on the dynamics of heavy probes in heavy quark cloud

TL;DR

This paper investigates how the back reaction from static heavy quarks affects the hydrodynamical properties and energy loss mechanisms of probes in a strongly coupled SYM plasma using holographic methods.

Contribution

It introduces a holographic model incorporating back reaction effects from heavy quarks, analyzing their impact on jet quenching, screening, and rotational dynamics in the plasma.

Findings

Back reaction increases energy loss of probes.

No angular drag effect on quark-antiquark bound states.

Back reaction modifies screening length and binding energy.

Abstract

We holographically study the effect of back reaction on the hydrodynamical properties of $\mathcal{N} = 4$ strongly coupled super Yang-Mills (SYM) thermal plasma. The back reaction we consider arises from the presence of static heavy quarks uniformly distributed over $\mathcal{N} = 4$ SYM plasma. In order to study the hydrodynamical properties, we use heavy quark as well as heavy quark-antiquark bound state as probes and compute the jet quenching parameter, screening length and binding energy. We also consider the rotational dynamics of heavy probe quark in the back-reacted plasma and analyse associated energy loss. We observe that the presence of back reaction enhances the energy-loss in the thermal plasma. Finally, we show that there is no effect of angular drag on the rotational motion of quark-antiquark bound state probing the back reacted thermal plasma.