Observation of vortex phase singularities in Bose-Einstein condensates
Soft Condensed Matter
2009-11-07 v1 Statistical Mechanics
Abstract
We have observed phase singularities due to vortex excitation in Bose-Einstein condensates. Vortices were created by moving a laser beam through a condensate. They were observed as dislocations in the interference fringes formed by the stirred condensate and a second unperturbed condensate. The velocity dependence for vortex excitation and the time scale for re-establishing a uniform phase across the condensate were determined.
Cite
@article{arxiv.cond-mat/0104444,
title = {Observation of vortex phase singularities in Bose-Einstein condensates},
author = {S. Inouye and S. Gupta and T. Rosenband and A. P. Chikkatur and A. Görlitz and T. L. Gustavson and A. E. Leanhardt and D. E. Pritchard and W. Ketterle},
journal= {arXiv preprint arXiv:cond-mat/0104444},
year = {2009}
}
Comments
4 pages, 5 figures