Transport in Anisotropic Superfluids: A Holographic Description

Journal of High Energy Physics (Impact Factor: 6.22). 09/2011; 2012(1). DOI: 10.1007/JHEP01(2012)059
Source: arXiv

ABSTRACT We study transport phenomena in p-wave superfluids in the context of
gauge/gravity duality. Due to the spacetime anisotropy of this system, the
tensorial structure of the transport coefficients is non-trivial in contrast to
the isotropic case. In particular, there is an additional shear mode which
leads to a non-universal value of the shear viscosity even in an Einstein
gravity setup. In this paper, we present a complete study of the helicity two
and helicity one fluctuation modes. In addition to the non-universal shear
viscosity, we also investigate the thermoelectric effect, i.e. the mixing of
electric and heat current. Moreover, we also find an additional effect due to
the anisotropy, the so-called flexoelectric effect.

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