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Matter-wave gap vortices in optical lattices

Ostrovskaya, Elena; Kivshar, Yuri

Description

We predict the existence of spatially localized nontrivial topological states of a Bose-Einstein condensate with repulsive atomic interactions confined by an optical lattice. These nonlinear localized states, matter-wave gap vortices, carry a vortexlike phase dislocation and exist in the gaps of the matter-wave band-gap 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.

CollectionsANU Research Publications
Date published: 2004-10-13
Type: Journal article
URI: http://hdl.handle.net/10440/924
http://digitalcollections.anu.edu.au/handle/10440/924
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.93.160405

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