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Sonic analog of gravitational black holes in Bose-Einstein condensates

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2000

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American Physical Society
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It is shown that, in dilute-gas Bose-Einstein condensates, there exist both dynamically stable and unstable configurations which, in the hydrodynamic limit, exhibit a behavior resembling that of gravitational black holes. The dynamical instabilities involve creation of quasiparticle pairs in positive and negative energy states, as in the well-known suggested mechanism for black-hole evaporation. We propose a scheme to generate a stable sonic black hole in a ring trap.

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© 2000 The American Physical Society. We thank the Austrian Science Foundation and the European Union TMR networks ERBFMRX-CT96-0002 and ERB-FMRX-CT96-0087.

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