Spinning up and down a Boltzmann gas
Soft Condensed Matter
2009-10-31 v1 Statistical Mechanics
Abstract
Using the average method, we derive a close set of linear equations that describes the spinning up of an harmonically trapped gas by a rotating anisotropy. We find explicit expressions for the needed to transfer angular momentum as well as the decay time induced by a static residual anisotropy. These different time scales are compared with the measured nucleation time and lifetime of vortices by the ENS group. We find a good agreement that may emphasize the role played by the non-condensed component in thoses experiments.
Cite
@article{arxiv.cond-mat/0003024,
title = {Spinning up and down a Boltzmann gas},
author = {David Guery-Odelin},
journal= {arXiv preprint arXiv:cond-mat/0003024},
year = {2009}
}
Comments
6 pages, 5 figures, submitted to Phys. Rev. A