Matter-wave gap vortices in optical lattices

Details Matter-wave gap vortices in optical lattices Matter-wave gap vortices in optical lattices

2004-04-29

arxiv.org/abs/cond-mat/0404714v2

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures, references and typos corrected

Scientific paper

10.1103/PhysRevLett.93.160405

We predict the existence of spatially localized nontrivial topological states of the Bose-Einstein condensate with repulsive atomic interactions confined by an optical lattice. These nonlinear localized states, matter-wave gap vortices, possess a phase dislocation and exist in the gaps of the matter-wave bandgap spectrum due to the Bragg scattering. We discuss the structure, stability, and formation dynamics of the gap vortices in the case of two-dimensional optical lattices.

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