Critical rotation of a harmonically trapped Bose gas

Preprint

8 March 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0201568

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.

Keywords

HARMONICALLY TRAPPED
CRITICAL ROTATION
TRAPPED BOSE GAS
CRITICAL VALUE
CONDENSATE
CLOUD

All Related Versions

Version 1, 2002-01-31, ArXiv
Version 2, 2002-03-08, ArXiv
Published version: Physical Review Letters, 88 (25), 250403.

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