Vortex precession in Bose-Einstein condensates: observations with filled and empty cores
Soft Condensed Matter
2009-10-31 v1 Statistical Mechanics
Abstract
We have observed and characterized the dynamics of singly quantized vortices in dilute-gas Bose-Einstein condensates. Our condensates are produced in a superposition of two internal states of 87Rb, with one state supporting a vortex and the other filling the vortex core. Subsequently, the state filling the core can be partially or completely removed, reducing the radius of the core by as much as a factor of 13, all the way down to its bare value. The corresponding superfluid rotation rates, evaluated at the core radius, vary by a factor of 150, but the precession frequency of the vortex core about the condensate axis changes by only a factor of two.
Cite
@article{arxiv.cond-mat/0005368,
title = {Vortex precession in Bose-Einstein condensates: observations with filled and empty cores},
author = {B. P. Anderson and P. C. Haljan and C. E. Wieman and E. A. Cornell},
journal= {arXiv preprint arXiv:cond-mat/0005368},
year = {2009}
}
Comments
4 pages, 3 figures