Spinning up and down a Boltzmann gas

Details Spinning up and down a Boltzmann gas Spinning up and down a Boltzmann gas

2000-03-02

arxiv.org/abs/cond-mat/0003024v1

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 5 figures, submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.62.033607

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.

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