Thermoelectric conductivities, shear viscosity, and stability in an anisotropic linear axion model
High Energy Physics - Theory
2015-11-25 v3
Abstract
We study thermoelectric conductivities and shear viscosities in a holographically anisotropic model, which is dual to a spatially anisotropic super-Yang-Mills theory at finite chemical potential. Momentum relaxation is realized through perturbing the linear axion field. Ac conductivity exhibits a coherent/incoherent metal transition. Deviations from the Wiedemann-Franz law are also observed in our model. The longitudinal shear viscosity for prolate anisotropy violates the bound conjectured by Kovtun-Son-Starinets. We also find that thermodynamic and dynamical instabilities are not always equivalent by examining the Gubser-Mitra conjecture.
Keywords
Cite
@article{arxiv.1412.8346,
title = {Thermoelectric conductivities, shear viscosity, and stability in an anisotropic linear axion model},
author = {Xian-Hui Ge and Yi Ling and Chao Niu and Sang-Jin Sin},
journal= {arXiv preprint arXiv:1412.8346},
year = {2015}
}
Comments
title changed, 31 pages, many figures, references added, PRD in press