Vortex Dipole in a Trapped Atomic Bose-Einstein Condensate

Details Vortex Dipole in a Trapped Atomic Bose-Einstein Condensate Vortex Dipole in a Trapped Atomic Bose-Einstein Condensate

2004-10-23

arxiv.org/abs/cond-mat/0410601v1

Physical Review A, 70, 043619 (2004)

Physics

Condensed Matter

Superconductivity

7 pages, 5 figures

Scientific paper

10.1103/PhysRevA.70.043619

We calculate the angular momentum and energy of a vortex dipole in a trapped atomic Bose-Einstein condensate. Fully analytic expressions are obtained. We apply the results to understand a novel phenomenon in the MIT group experiment, an excellent agreement is achieved, and further experimental investigation is proposed to confirm this vortex dipole mechanism. We then suggest an effective generation and detection of vortex dipole for experimental realization. Application of the sum rule to calculate collective mode frequency splitting is also discussed.

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