Reaching the hydrodynamic regime in a Bose-Einstein condensate by suppression of avalanche
arXiv:cond-mat/0609172 · doi:10.1103/PhysRevA.75.031602
Abstract
We report the realization of a Bose-Einstein condensate (BEC) in the hydrodynamic regime. The hydrodynamic regime is reached by evaporative cooling at a relative low density suppressing the effect of avalanches. With the suppression of avalanches a BEC containing 120.10^6 atoms is produced. The collisional opacity can be tuned from the collisionless regime to a collisional opacity of more than 3 by compressing the trap after condensation. In the collisional opaque regime a significant heating of the cloud at time scales shorter than half of the radial trap period is measured. This is direct proof that the BEC is hydrodynamic.
Article submitted for Phys. Rev. Letters, 6 figures
References in corpus (2)
Cited by in corpus (9)
- Cold and trapped metastable noble gases
- Sound propagation in a Bose-Einstein condensate at finite temperatures
- Detection of continuous variable entanglement without coherent local oscillators
- Avalanches of Bose-Einstein Condensates in Leaking Optical Lattices
- Spin drag in noncondensed Bose gases
- Variational analysis of flat-top solitons in Bose-Einstein condensates
- Enhanced heat flow in the hydrodynamic-collisionless regime
- Kinetics of Bose-Einstein condensation in a dimple potential
- Squeezed field path integral description of second sound in Bose-Einstein condensates