Conductivity at finite 't Hooft coupling from AdS/CFT

TL;DR

This paper investigates how finite 't Hooft coupling and higher curvature corrections affect the DC conductivity of hypermultiplet fields in a strongly coupled super-Yang-Mills plasma using AdS/CFT correspondence.

Contribution

It extends the AdS/CFT analysis of conductivity to include finite coupling effects and curvature-squared corrections, providing new insights into transport properties.

Findings

Finite 't Hooft coupling reduces conductivity.

Curvature-squared and Gauss-Bonnet corrections modify conductivity.

Results applicable to strongly coupled gauge theories.

Abstract

We use the AdS/CFT correspondence to study the DC conductivity of massive $\mathcal{N} = 2$ hypermultiplet fields in an $\mathcal{N} = 4\, SU(N_c)$ super-Yang-Mills theory plasma in the large $N_c$ and finite 't Hooft coupling. We also discuss general curvature-squared and Gauss-Bonnet corrections on the DC conductivity.