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Thermoelectric conductivities, shear viscosity, and stability in an anisotropic linear axion modelopen access

Authors
Ge, Xian-HuiLing, YiNiu, ChaoSin, Sang-Jin
Issue Date
Nov-2015
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.92, no.10, pp.1 - 16
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
92
Number
10
Start Page
1
End Page
16
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/142891
DOI
10.1103/PhysRevD.92.106005
ISSN
1550-7998
Abstract
We study thermoelectric conductivities and shear viscosities in a holographically anisotropic model, which is dual to a spatially anisotropic N = 4 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.
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