Output coupling and flow of a dilute Bose-Einstein condensate

Details Output coupling and flow of a dilute Bose-Einstein condensate Output coupling and flow of a dilute Bose-Einstein condensate

1998-04-03

arxiv.org/abs/cond-mat/9804038v2

Physics

Condensed Matter

Statistical Mechanics

10 pages, 6 figures, REVTeX. Revised version, to appear in J. Phys. B

Scientific paper

10.1088/0953-4075/31/20/008

We solve the Gross-Pitaevskii equation to model the behaviour of a weakly-interacting Bose condensate. Solutions are presented for the eigenstates in one- and two-dimensional harmonic traps. We include the effect of gravity and coupling to a second condensate to simulate an output coupler for Bose condensed atoms, and find that the output pulse shape is in qualitative agreement with experiment. We also model flow under gravity through a constriction, demonstrating excitation and separation of eigenmodes in the condensate.

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