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arxiv: gr-qc/0503089 · v1 · submitted 2005-03-21 · 🌀 gr-qc

Superradiance from BEC vortices: a numerical study

F. Federici , C. Cherubini , S. Succi , M. P. Tosi This is my paper
classification 🌀 gr-qc
keywords numericalscatteringsoundsuperradiantvortexangularassociatedbose-einstein
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The scattering of sound wave perturbations from vortex excitations of Bose-Einstein condensates(BEC) is investigated by numerical integration of the associated Klein-Gordon equation. It is found that, at sufficiently high angular speeds, sound wave-packets can extract a sizeable fraction of the vortex energy through a mechanism of superradiant scattering. It is conjectured that this superradiant regime may be detectable in BEC experiments.

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  1. Superradiance -- the 2020 Edition

    gr-qc 2015-01 unverdicted novelty 4.0

    Black-hole superradiance extracts energy via the ergoregion and can trigger instabilities with applications to dark matter, beyond-Standard-Model physics, and laboratory analogs.