Dynamical vortex phases in a Bose-Einstein condensate driven by a rotating optical lattice
Other Condensed Matter
2009-11-11 v2
Abstract
We present simulation results of the vortex dynamics in a trapped Bose-Einstein condensate in the presence of a rotating optical lattice. Changing the potential amplitude and the relative rotation frequency between the condensate and the optical lattice, we find a rich variety of dynamical phases of vortices. The onset of these different phases is described by the force balance of a driving force, a pinning force and vortex-vortex interactions. In particular, when the optical lattice rotates faster than the condensate, an incommensurate effect leads to a vortex liquid phase supported by the competition between the driving force and the dissipation.
Cite
@article{arxiv.cond-mat/0608656,
title = {Dynamical vortex phases in a Bose-Einstein condensate driven by a rotating optical lattice},
author = {Kenichi Kasamatsu and Makoto Tsubota},
journal= {arXiv preprint arXiv:cond-mat/0608656},
year = {2009}
}
Comments
4 pages, 3 figures