title: Sonic analog of gravitational black holes in bose-einstein condensates
abstract: 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.
authors.affiliation: Institut fur Theoretische Physik, Universitat Innsbruck, Technikerstrasse 25, A-6020 Innsbruck, Austria and Instituto de Matematicas y Fisica Fundamental, CSIC, C/Serrano 121, E-28006 Madrid, Spain.
authors.initials: LJ
authors.lastname: Garay
authors.initials: JR
authors.lastname: Anglin
authors.initials: JI
authors.lastname: Cirac
authors.initials: P
authors.lastname: Zoller