Splitting of a doubly quantized vortex through intertwining in Bose-Einstein condensates
Soft Condensed Matter
2009-11-10 v4
Abstract
The stability of doubly quantized vortices in dilute Bose-Einstein condensates of 23Na is examined at zero temperature. The eigenmode spectrum of the Bogoliubov equations for a harmonically trapped cigar-shaped condensate is computed and it is found that the doubly quantized vortex is spectrally unstable towards dissection into two singly quantized vortices. By numerically solving the full three-dimensional time-dependent Gross-Pitaevskii equation, it is found that the two singly quantized vortices intertwine before decaying. This work provides an interpretation of recent experiments [A. E. Leanhardt et al. Phys. Rev. Lett. 89, 190403 (2002)].
Cite
@article{arxiv.cond-mat/0303256,
title = {Splitting of a doubly quantized vortex through intertwining in Bose-Einstein condensates},
author = {M. Mottonen and T. Mizushima and T. Isoshima and M. M. Salomaa and K. Machida},
journal= {arXiv preprint arXiv:cond-mat/0303256},
year = {2009}
}
Comments
4 pages, 3 figures (to be published in PRA)