Observation of Vortex Phase Singularities in Bose-Einstein Condensates
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- 2 August 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 87 (8) , 080402
- https://doi.org/10.1103/physrevlett.87.080402
Abstract
We have observed phase singularities due to vortex excitation in Bose-Einstein condensates. Vortices were created by moving a laser beam through a condensate. They were observed as dislocations in the interference fringes formed by the stirred condensate and a second unperturbed condensate. The velocity dependence for vortex excitation and the time scale for re-establishing a uniform phase across the condensate were determined.Keywords
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