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The sound damping constant for generalized theories of gravity
Ram Brustein, A. J. M. Medved
The near-horizon metric for a black brane in Anti-de Sitter (AdS) space and the metric near the AdS boundary both exhibit hydrodynamic behavior. We demonstrate the equivalence of t…
The shear diffusion coefficient for generalized theories of gravity
Ram Brustein, A. J. M. Medved
Near the horizon of a black brane in Anti-de Sitter (AdS) space and near the AdS boundary, the long-wavelength fluctuations of the metric exhibit hydrodynamic behaviour. The gauge-…
The ratio of shear viscosity to entropy density in generalized theories of gravity
Ram Brustein, A. J. M. Medved
Near the horizon of a black brane solution in Anti-de Sitter space, the long-wavelength fluctuations of the metric exhibit hydrodynamic behaviour. For Einstein's theory, the ratio…
A Comment or two on Holographic Dark Energy
A. J. M. Medved
It has, quite recently, become fashionable to study a certain class of holographic-inspired models for the dark energy. These investigations have, indeed, managed to make some sign…