Observation of vortex phase singularities in Bose-Einstein condensates

A.E. Leanhardt; A. G\"orlitz; A.P. Chikkatur; D.E. Pritchard; S. Gupta; S. Inouye; T.L. Gustavson; T. Rosenband; W. Ketterle

arxiv: cond-mat/0104444 · v1 · submitted 2001-04-23 · ❄️ cond-mat.soft · cond-mat.stat-mech

Observation of vortex phase singularities in Bose-Einstein condensates

S. Inouye , S. Gupta , T. Rosenband , A.P. Chikkatur , A. G\"orlitz , T.L. Gustavson , A.E. Leanhardt , D.E. Pritchard

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W. Ketterle

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classification ❄️ cond-mat.soft cond-mat.stat-mech

keywords condensatephasevortexwerebose-einsteincondensatesexcitationobserved

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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.

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Observation of vortex phase singularities in Bose-Einstein condensates

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