Dynamics of a Single Vortex Line in a Bose-Einstein Condensate
نویسندگان
چکیده
منابع مشابه
Dynamics of a single vortex line in a Bose-Einstein condensate.
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...
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We present a method for numerically building a vortex knot state in the superfluid wave function of a Bose-Einstein condensate. We integrate in time the governing Gross-Pitaevskii equation to determine evolution and shape preservation of the two (topologically) simplest vortex knots which can be wrapped over a torus. We find that the velocity of a vortex knot depends on the ratio of poloidal an...
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We have studied the motion of a vortex-antivortex pair together with a single vortex in trapped Bose-Einstein condensate (BEC) by numerically solving the twodimensional Gross-Pitaevskii equation, and found that the path of the vortices depends on the initial separation distance and dissipation. This motion was periodic and it was found that sound waves appear due to the cyclical movement, whose...
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Shin-Ichiro Ogawa, Mikko Möttönen, Mikio Nakahara, Tetsuo Ohmi, and Hisanori Shimada Department of Physics, Osaka City University, Osaka 558-8585, Japan Materials Physics Laboratory, Helsinki University of Technology, P.O. Box 2200 (Technical Physics), FIN-02015 HUT, Finland Department of Physics, Kinki University, Higashi-Osaka 577-8502, Japan Department of Physics, Kyoto University, Kyoto 606...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2002
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.89.200403