Vortex-lattice formation and melting in a nonrotating Bose-Einstein condensate

Details Vortex-lattice formation and melting in a nonrotating Bose-Einstein condensate Vortex-lattice formation and melting in a nonrotating Bose-Einstein condensate

2008-01-02

arxiv.org/abs/0801.0383v2

Physics

Condensed Matter

Other Condensed Matter

10 pages, 8 figures, REVTeX4, Added a section following the introduction and clarified the description of the numerical model.

Scientific paper

10.1103/PhysRevA.78.013631

Numerical simulations of the interference of a three-way segmented nonrotating Bose-Einstein condensate reveal the production of a honeycomb vortex lattice containing significant numbers of vortices and antivortices. If confined within a trap, the lattice subsequently melts, exhibiting a rich assortment of vortex-antivortex interactions. In contrast with nonlinear vortex production mechanisms previously described for Bose-Einstein condensates, the process here is shown to be primarily one of linear superposition, with initial vortex locations approximately described by a linear theory of wave packet interference.

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