Reaching the hydrodynamic regime in a Bose-Einstein condensate by suppression of avalanche
Other Condensed Matter
2015-06-25 v1
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.
Keywords
Cite
@article{arxiv.cond-mat/0609172,
title = {Reaching the hydrodynamic regime in a Bose-Einstein condensate by suppression of avalanche},
author = {K. M. R. van der Stam and R. Meppelink and J. M. Vogels and P. van der Straten},
journal= {arXiv preprint arXiv:cond-mat/0609172},
year = {2015}
}
Comments
Article submitted for Phys. Rev. Letters, 6 figures