Critical rotation of a harmonically trapped Bose gas
Mesoscale and Nanoscale Physics
2009-11-07 v2 Statistical Mechanics
Abstract
We study experimentally and theoretically a cold trapped Bose gas under critical rotation, i.e. with a rotation frequency close to the frequency of the radial confinement. We identify two regimes: the regime of explosion where the cloud expands to infinity in one direction, and the regime where the condensate spirals out of the trap as a rigid body. The former is realized for a dilute cloud, and the latter for a Bose-Einstein condensate with the interparticle interaction exceeding a critical value. This constitutes a novel system in which repulsive interactions help in maintaining particles together.
Cite
@article{arxiv.cond-mat/0201568,
title = {Critical rotation of a harmonically trapped Bose gas},
author = {P. Rosenbusch and D. S. Petrov and S. Sinha and F. Chevy and V. Bretin and Y. Castin and G. Shlyapnikov and J. Dalibard},
journal= {arXiv preprint arXiv:cond-mat/0201568},
year = {2009}
}
Comments
4 pages, 4 figures, submitted to PRL