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Inhomogeneous fluid flows which become supersonic are known to produce acoustic analogs of ergoregions and horizons. This leads to Hawking-like radiation of phonons with a temperature essentially given by the gradient of the velocity at the horizon. We find such acoustic dumb holes in charged conformal fluids and use the fluid-gravity correspondence to construct dual gravity solutions. A class of quasinormal modes around these gravitational backgrounds perceive a horizon. Upon quantization, this implies a thermal spectrum for these modes.
The partition function of a three-dimensional $mathcal{N} =2$ theory on the manifold $mathcal{M}_{g,p}$, an $S^1$ bundle of degree $p$ over a closed Riemann surface $Sigma_g$, was recently computed via supersymmetric localization. In this paper, we c
We argue that generic non-relativistic quantum field theories have a holographic description in terms of Horava gravity. We construct explicit examples of this duality embedded in string theory by starting with relativistic dual pairs and taking a non-relativistic scaling limit.
We compute the large N limit of Wilson loop expectation values for a broad class of N=2 supersymmetric gauge theories defined on a general class of background three-manifolds M_3, diffeomorphic to S^3. We find a simple closed formula which depends on
We study the plane wave limit of $AdS_5times S^5/Z_2$ which arises as the near horizon geometry of D3-branes at an orientifold 7-plane in type I theory. We analyze string theory in the resulting plane wave background which contains open strings. We i
We study gravity duals to a broad class of N=2 supersymmetric gauge theories defined on a general class of three-manifold geometries. The gravity backgrounds are based on Euclidean self-dual solutions to four-dimensional gauged supergravity. As well