# Thermal transport and quasi-normal modes in Gauss-Bonnet-axions theory

## TL;DR

This paper investigates thermal transport properties and quasi-normal modes in Gauss-Bonnet-axions gravity, revealing how momentum dissipation and Gauss-Bonnet coupling influence thermal conductivity and providing analytical and numerical insights.

## Contribution

It presents new analytical and numerical results on thermal conductivity and quasi-normal modes in Gauss-Bonnet-axions gravity, including the effects of momentum dissipation and higher curvature corrections.

## Key findings

- Momentum dissipation suppresses DC thermal conductivity.
- Larger Gauss-Bonnet parameter enhances thermal conductivity.
- Analytical and numerical QNM frequencies agree well in large dimensions.

## Abstract

We obtain the black brane solution in arbitrary dimensional Gauss-Bonnet-axions (GBA) gravity theory. And then the thermal conductivity of the boundary theory dual to this neutral black brane is explored. We find that the momentum dissipation suppresses the DC thermal conductivity while it is enhanced by larger GB parameter. The analytical and numerical results of DC thermal conductivity match very well. Also we study the effect of the momentum dissipation and the GB coupling on the AC thermal conductivity and fit the results by Drude-like behavior for low frequency. Finally, we analytical compute the quasi-normal modes (QNM) frequency of the perturbative master field in large dimensions limit. Our analytical QNM frequencies agree well with the numerical results in large enough finite dimensions.