Calculating the jet quenching parameter in the plasma of NCYM theory from gauge/gravity duality

TL;DR

This paper uses gauge/gravity duality to compute the jet quenching parameter in hot non-commutative Yang-Mills plasma, revealing how non-commutativity and temperature influence energy loss in strongly coupled systems.

Contribution

It provides a novel calculation of the jet quenching parameter in non-commutative Yang-Mills theory using string theory duals, including effects of non-commutativity and temperature.

Findings

Jet quenching parameter decreases with small non-commutativity.

Reduction in jet quenching scales as T^7 with temperature.

Results generalized to diverse dimensions.

Abstract

A particular decoupling limit of non-extremal (D1, D3) brane bound state system of type IIB string theory is known to give the gravity dual of space-space non- commutative Yang-Mills (NCYM) theory at finite temperature. We use a string probe in this background to compute the jet quenching parameter in the strongly coupled plasma of hot non-commutative Yang-Mills theory in (3+1)-dimensions from gauge/gravity duality. We give the expressions for the jet quenching parameter for both small and large non-commutativity. For small non-commutativity, we find that the value of the jet quenching parameter gets reduced from its commutative value. The reduction is enhanced with temperature as T^{7} for fixed non-commutativity and the fixed 't Hooft coupling. We further generalize the results for the non-commutative Yang-Mills theories in diverse dimensions.