Shear Viscosity from AdS Born-Infeld Black Holes

TL;DR

This paper computes the shear viscosity to entropy ratio in a holographic model with Einstein-Born-Infeld gravity, confirming the universal value up to first order in the Born-Infeld parameter.

Contribution

It extends the AdS/CFT shear viscosity calculations to Einstein-Born-Infeld gravity, showing the ratio remains universal at first order in the Born-Infeld parameter.

Findings

The ratio η/s remains at 1/4π up to first order in 1/b^2.

The Born-Infeld corrections do not alter the universal shear viscosity to entropy ratio at this order.

Abstract

We calculate the shear viscosity in the frame of AdS/CFT correspondence for the field theory with a gravity dual of Einstein-Born-Infeld gravity. We find that the ratio of $\eta/s$ is still the conjectured universal value $1/4\pi$ at least up to the first order of the Born-Infeld parameter $1/b^2$.