Formation of a sonic horizon in isotropically expanding Bose-Einstein condensates
arXiv:0704.1096 · doi:10.1103/PhysRevA.76.053603
Abstract
We propose a simple experiment to create a sonic horizon in isotropically trapped cold atoms within currently available experimental techniques. Numerical simulation of the Gross-Pitaevskii equation shows that the sonic horizon should appear by making the condensate expand. The expansion is triggered by changing the interaction which can be controlled by the Feshbach resonance in real experiments. The sonic horizon is shown to be quasi-static for sufficiently strong interaction or large number of atoms. The characteristic temperature that is associated with particle emission from the horizon, which corresponds to the Hawking temperature in an ideal situation, is estimated to be a few nK.
7 pages, 8 figures; Final version, accepted to Phys.Rev. A
References in corpus (16)
- Analogue Gravity
- Dynamics of collapsing and exploding Bose-Einstein condensates
- Sonic analog of gravitational black holes in Bose-Einstein condensates
- Hawking Spectrum and High Frequency Dispersion
- Collapse and Bose-Einstein condensation in a trapped Bose-gas with negative scattering length
- Sonic black holes in dilute Bose-Einstein condensates
- Analog gravity from Bose-Einstein condensates
- Gibbons-Hawking Effect in the Sonic de Sitter Space-Time of an Expanding Bose-Einstein-Condensed Gas
- Probing semiclassical analogue gravity in Bose--Einstein condensates with widely tunable interactions
- Quantum simulation of cosmic inflation in two-component Bose-Einstein condensates
- "Cosmological" quasiparticle production in harmonically trapped superfluid gases
- BEC Collapse and Dynamical Squeezing of Vacuum Fluctuations
- Mean-field analysis of collapsing and exploding Bose-Einstein condensates
- Analogue models for FRW cosmologies
- Observer dependence for the phonon content of the sound field living on the effective curved space-time background of a Bose-Einstein condensate
- Cosmic Dynamics of Bose-Einstein Condensates
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- Spacetime analogue of Bose-Einstein condensates: Bogoliubov-de Gennes formulation
- Particle creation in Bose--Einstein condensates: Theoretical formulation based on conserving gapless mean field theory
- Amplifying the Hawking signal in BECs
- Time-resolved density correlations as probe of squeezing in toroidal Bose-Einstein condensates