Three-vortex configurations in trapped Bose-Einstein condensates

We report on the creation of three-vortex clusters in a {sup 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...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2010-09, Vol.82 (3), Article 033616
Main 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., Magalhães, K. M. F., Bagnato, V. S.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOSE-EINSTEIN CONDENSATION
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFIGURATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OSCILLATIONS
RADIOISOTOPES
RUBIDIUM 87
RUBIDIUM ISOTOPES
TRAPPING
VORTICES
YEARS LIVING RADIOISOTOPES
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Summary:We report on the creation of three-vortex clusters in a {sup 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.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.82.033616