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

Published

February 1, 2002

Author(s)

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

Abstract

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.

Citation

Physical Review Letters

Volume

88

Issue

No. 7

Pub Type

Journals

Keywords

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

Citation

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 October 11, 2025)