Dynamical vortex phases in a Bose-Einstein condensate driven by a rotating optical lattice
arXiv:cond-mat/0608656 · doi:10.1103/PhysRevLett.97.240404
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.
4 pages, 3 figures
References in corpus (3)
Cited by in corpus (7)
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