Gauge-gravity correspondence; AdS-CFT Correspondence; Holography and quark-gluon plasmas
Issue Date
2011-04
Publisher
INT SCHOOL ADVANCED STUDIES
Citation
JOURNAL OF HIGH ENERGY PHYSICS, Page. -
Abstract
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.