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Consequence of Superfluidity on the Expansion of a Rotating Bose-Einstein Condensate



Mark A. Edwards, Charles W. Clark, P Pedri, L Pitaevskii, S Stringari


By solving the hydrodynamic equations of irrotational superfluids we investigate the time evolution of a rotating condensate expanding after the sudden release of the confining trap. If the condensate is initially rotating slowly its angular velocity is predicted to exhibit a fast increase during the first stage of the expansion. The maximum value acquired by the angular velocity is accompanied by a minimum in the deformation of the condensate in the rotating plane. During the expansion the sample makes a global rotation of about p/2, the exact value depending on the initial value of the angular velocity.
Physical Review Letters
No. 7


Bose-Einstein condensate, matter waves, mean-field theory, superfluidity


Edwards, M. , Clark, C. , Pedri, P. , Pitaevskii, L. and Stringari, S. (2002), Consequence of Superfluidity on the Expansion of a Rotating Bose-Einstein Condensate, Physical Review Letters (Accessed March 3, 2024)
Created February 1, 2002, Updated June 2, 2021