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- Centre National de la Recherche ScientifiqueFR377 papers
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Showing 2011 · hep-thShow all
2 papers · 2 filters
hep-th2011★ 6 cited
Non-perturbative unitarity constraints on the ratio of shear viscosity to entropy density in UV complete theories with a gravity dual
Ram Brustein, A. J. M. Medved
We reconsider, from a novel perspective, how unitarity constrains the corrections to the ratio of shear viscosity η to entropy density s. We start with higher-derivative extensions…
hep-th2011★ 7 cited
Evaluating the Wald Entropy from two-derivative terms in quadratic actions
Ram Brustein, Dan Gorbonos, Merav Hadad +1
We evaluate the Wald Noether charge entropy for a black hole in generalized theories of gravity. Expanding the Lagrangian to second order in gravitational perturbations, we show th…