2010/11/30 by Sumit R. Das, Archisman Ghosh, Jae-Hyuk Oh +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Conformal map #Cosmology and Gravitation Theories #Dual polyhedron #Duality (order theory) #Gravitation #Quantum Electrodynamics and Casimir Effect #Spectrum (functional analysis) #Supersonic speed #Thermal #hep-th
paper · pdf · doi:10.1007/jhep04(2011)030
published as JHEP 1104:030,2011 · 24 pages, 4 figures
arxiv created 2011/03/23 · openalex publication_date 2011/04/01 · arxiv updated 2013/04/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.