Gibbons-Hawking Effect in the Sonic de Sitter Space-Time of an Expanding Bose-Einstein-Condensed Gas

Abstract

We propose an experimental scheme to observe the Gibbons-Hawking effect in the acoustic analog of a 1+1-dimensional de Sitter universe, produced in an expanding, cigar-shaped Bose-Einstein condensate. It is shown that a two-level system created at the center of the trap, an atomic quantum dot interacting with phonons, observes a thermal Bose distribution at the de Sitter temperature.

4 pages, 2 figures, RevTex4; as published

References in corpus (1)

• Feshbach resonances in rubidium 87: Precision measurement and analysis

Cited by in corpus (6)

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• Commutability between Semiclassical Limit and Adiabatic Limit
• Quasiparticle universes in Bose-Einstein condensates
• Massive phonon modes from a BEC-based analog model