The validity of the Landau-Zener model for output coupling of Bose condensates
J. -P. Martikainen, K. -A. Suominen
Abstract
We investigate the validity of the Landau-Zener model in describing the output coupling of Bose condensates from magnetic traps by a chirped radiofrequency field. The predictions of the model are compared with the numerical solutions of the Gross-Pitaevskii equation. We find a dependence on the chirp direction, and also quantify the role of gravitation.
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