Three-vortex configurations in trapped Bose-Einstein condensates

Year: 2010

Authors: Seman J. A., Henn E. A. L., Haque M., Shiozaki R. F., Ramos E. R. F., Caracanhas M., Castilho P., Castelo Branco C., Tavares P. E. S., Poveda-Cuevas F. J., Roati G., Magalhaes K. M. F., Bagnato V. S.

Autors Affiliation: Instituto de Fısica de Sao Carlos, USP, Caixa Postal 369, 13560-970 Sao Carlos, Sao Paulo, Brazil; Max Planck Institute for Physics of Complex Systems Nothnitzer Strasse 38, D-01187 Dresden, Germany; LENS and Dipartimento di Fisica, Universita di Firenze, and CNR – Istituto Nazionale di Ottica, Via Nello Carrara 1, I-50019 Sesto Fiorentino, Italy

Abstract: We report on the creation of three-vortex clusters in a (87)Rb Bose-Einstein condensate by oscillatory excitation of the condensate. This procedure can create vortices of both circulations, so that we are able to create several types of vortex clusters using the same mechanism. The three-vortex configurations are dominated by two types, namely, an equilateral-triangle arrangement and a linear arrangement. We interpret these most stable configurations respectively as three vortices with the same circulation and as a vortex-antivortex-vortex cluster. The linear configurations are very likely experimental signatures of predicted stationary vortex clusters.


Volume: 82 (3)      Pages from: 033616  to: 033616

More Information: Special thanks to C. Salomon and W.D. Phillips for fruitful discussion. This work was supported by FAPESP (Research Program CEPID/CEPOF), CAPES, and CNPq (Research Program INCT).
DOI: 10.1103/PhysRevA.82.033616

Citations: 50
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