Vortex Precession in Bose-Einstein Condensates: Observations With Filled and Empty Cores

Published

October 1, 2000

Author(s)

B P. Anderson, P C. Haljan, C E. Wieman, Eric A. Cornell

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 of the healing length. 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 2.

Citation

Physical Review Letters

Volume

85

Issue

No. 14

Pub Type

Journals

Keywords

Bose-Einstein condensation, superfluidity, vortex

Citation

Anderson, B. , Haljan, P. , Wieman, C. and Cornell, E. (2000), Vortex Precession in Bose-Einstein Condensates: Observations With Filled and Empty Cores, Physical Review Letters (Accessed April 18, 2024)