Dynamics of a single vortex line in a Bose-Einstein condensate

Details Dynamics of a single vortex line in a Bose-Einstein condensate Dynamics of a single vortex line in a Bose-Einstein condensate

2002-06-26

arxiv.org/abs/cond-mat/0206511v2

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.89.200403

We study experimentally the line of a single quantized vortex in a rotating prolate Bose-Einstein condensate confined by a harmonic potential. In agreement with predictions, we find that the vortex line is in most cases curved at the ends. We monitor the vortex line leaving the condensate. Its length is measured as a function of time and temperature. For a low temperature, the survival time can be as large as 10 seconds. The length of the line and its deviation from the center of the trap are related to the angular momentum per particle along the condensate axis.

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