The validity of the Landau-Zener model for output coupling of Bose condensates
J.-P. Martikainen, K.-A. Suominen
TL;DR
This paper assesses the accuracy of the Landau-Zener model in describing Bose condensate output coupling, comparing its predictions with numerical solutions and exploring effects like chirp direction and gravity.
Contribution
It provides a validation of the Landau-Zener model for Bose condensates and analyzes factors affecting its applicability, such as chirp direction and gravity.
Findings
Landau-Zener model's predictions depend on chirp direction
Gravity influences the output coupling process
Numerical solutions reveal limitations of the model under certain conditions
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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