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Towards the observation of Hawking radiation in Bose--Einstein condensates

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arxiv gr-qc/0110036 v1 pith:2TJQ6WH2 submitted 2001-10-06 gr-qc cond-mathep-th

Carlos Barcelo (Washington University in Saint Louis) Stefano Liberati (University of Maryland) , Matt Visser (Washington University in Saint Louis) This is my paper · ORCID
classification gr-qccond-mathep-th
keywords hawkingtemperatureacousticblackbose--einsteinflowholeshorizon
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Acoustic analogues of black holes (dumb holes) are generated when a supersonic fluid flow entrains sound waves and forms a trapped region from which sound cannot escape. The surface of no return, the acoustic horizon, is qualitatively very similar to the event horizon of a general relativity black hole. In particular Hawking radiation (a thermal bath of phonons with temperature proportional to the ``surface gravity'') is expected to occur. In this note we consider quasi-one-dimensional supersonic flow of a Bose--Einstein condensate (BEC) in a Laval nozzle (converging-diverging nozzle), with a view to finding which experimental settings could magnify this effect and provide an observable signal. We identify an experimentally plausible configuration with a Hawking temperature of order 70 n K; to be contrasted with a condensation temperature of the order of 90 n K.

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Cited by 2 Pith papers

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  1. Non-local correlations of a test quantum field in gravitational collapse

    gr-qc 2025-05 conditional novelty 6.0 of 10

    Equal-time vacuum correlations of a test quantum field on a dynamically collapsing, horizon-forming spacetime develop non-local peaks across the apparent horizon, and the outside peak moves away from the horizon over time.

  2. Exploring Event Horizons and Hawking Radiation through Deformed Graphene Membranes

    cond-mat.mes-hall 2019-07 unverdicted novelty 5.0 of 10

    Simulations indicate that negative-curvature graphene membranes can form stable analogue horizons whose local density of states exhibits thermal character at a few tens of Kelvin.

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