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25 April 2024

» arxiv » cond-mat/0104444

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Observation of vortex phase singularities in Bose-Einstein condensates
S. Inouye ; S. Gupta ; T. Rosenband ; A.P. Chikkatur ; A. Görlitz ; T.L. Gustavson ; A.E. Leanhardt ; D.E. Pritchard ; W. Ketterle ;
Date:	24 Apr 2001
Subject:	Soft Condensed Matter; Statistical Mechanics \| cond-mat.soft cond-mat.stat-mech
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.
Source:	arXiv, cond-mat/0104444
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