Superradiant scattering from a hydrodynamic vortex

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dc.creatorSlatyer, T. R.
dc.creatorSavage, C. M.
dc.date2005-01-10
dc.date.accessioned2026-07-07T12:55:46Z
dc.date.available2026-07-07T12:55:46Z
dc.descriptionWe show that sound waves scattered from a hydrodynamic vortex may be amplified. Such superradiant scattering follows from the physical analogy between spinning black holes and hydrodynamic vortices. However a sonic horizon analogous to the black hole event horizon does not exist unless the vortex possesses a central drain, which is challenging to produce experimentally. In the astrophysical domain, superradiance can occur even in the absence of an event horizon: we show that in the hydrodynamic analogue, a drain is not required and a vortex scatters sound superradiantly. Possible experimental realization in dilute gas Bose-Einstein condensates is discussed.
dc.description10 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/cond-mat/0501182
dc.identifierhttp://arxiv.org/abs/cond-mat/0501182
dc.identifierClass.Quant.Grav.22:3833-3839,2005
dc.identifierdoi:10.1088/0264-9381/22/19/002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224366
dc.subjectOther Condensed Matter
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleSuperradiant scattering from a hydrodynamic vortex
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