Observation of vortex phase singularities in Bose-Einstein condensates |
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| Authors: | Inouye S Gupta S Rosenband T Chikkatur A P Görlitz A Gustavson T L Leanhardt A E Pritchard D E Ketterle W |
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| Affiliation: | Department of Physics, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. |
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| 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. |
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