paper

Viscosity of holographic fluid in the presence of dark matter sector

arXiv:1603.07858 · doi:10.1007/JHEP08(2016)124

Abstract

Based on the gauge/gravity correspondence, the hydrodynamic response coefficients, shear and Hall viscosities, have been studied. The holographic model of Einstein-Maxwell- AdS -dimensional system additionally coupled with the another gauge field mimicking the {\it dark matter} sector, as well as, gravitational Chern-Simons term bounded with a dynamical scalar field, were taken into account. Condensation of the scalar field provides the parity violating term. Both shear and Hall viscosities have been calculated and their dependence on - the coupling constant between matter and {\it dark matter} sectors has been studied. To the lowest order in the derivative expansion and perturbation in , the shear viscosity is not influenced by the {\it dark matter}, while the Hall component linearly depends on .

JHEP style, this version meets the published one, JHEP08 (2016) 124

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