Anisotropic plasmas from axion and dilaton deformations

TL;DR

This paper constructs holographic models of anisotropic plasmas via axion and dilaton deformations, revealing Lifshitz-like scaling regimes and calculating transport properties like thermal conductivity and shear viscosity.

Contribution

It introduces new black hole solutions in type IIB supergravity that model anisotropic plasmas with non-trivial axion and dilaton profiles, including an intermediate Lifshitz-like scaling regime.

Findings

Identification of Lifshitz-like scaling in the IR regime.

Calculation of DC thermal conductivity.

Determination of shear viscosity components.

Abstract

We construct black hole solutions of type IIB supergravity that are holographically dual to anisotropic plasmas arising from deformations of an infinite class of four-dimensional CFTs. The CFTs are dual to $AdS_5\times X_5$, where $X_5$ is an Einstein manifold, and the deformations involve the type IIB axion and dilaton, with non-trivial periodic dependence on one of the spatial directions of the CFT. At low temperatures the solutions approach smooth domain wall solutions with the same $AdS_5\times X_5$ solution appearing in the far IR. For sufficiently large deformations an intermediate scaling regime appears which is governed by a Lifshitz-like scaling solution. We calculate the DC thermal conductivity and some components of the shear viscosity tensor.