Limits to the analogue Hawking temperature in a Bose-Einstein condensate

Abstract

Quasi-one dimensional outflow from a dilute gas Bose-Einstein condensate reservoir is a promising system for the creation of analogue Hawking radiation. We use numerical modeling to show that stable sonic horizons exist in such a system under realistic conditions, taking into account the transverse dimensions and three-body loss. We find that loss limits the analogue Hawking temperatures achievable in the hydrodynamic regime, with sodium condensates allowing the highest temperatures. A condensate of 30,000 atoms, with transverse confinement frequency omega_perp=6800*2*pi Hz, yields horizon temperatures of about 20 nK over a period of 50 ms. This is at least four times higher than for other atoms commonly used for Bose-Einstein condensates.

9 pages, 4 figures, replaced with published version

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Cited by in corpus (8)

• Numerical observation of Hawking radiation from acoustic black holes in atomic Bose-Einstein condensates
• Sensitivity of Hawking radiation to superluminal dispersion relations
• Phonon background versus analogue Hawking radiation in Bose-Einstein condensates
• Quantum fluctuations in trapped time-dependent Bose-Einstein condensates
• Scalar Quantum Field Theory in Disordered Media
• Emergent gravity: the BEC paradigm
• Time-resolved density correlations as probe of squeezing in toroidal Bose-Einstein condensates
• Supersonic optical tunnels for Bose-Einstein condensates