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Emergence of superfluid transport in a dynamical system of ultracold atoms

Joachim Brand·Andrey R. Kolovsky
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Abstract

The dynamics of a Bose-Einstein condensate is studied theoretically in a combined periodic plus harmonic external potential. Different dynamical regimes of stable and unstable collective dipole and Bloch oscillations are analysed in terms of a quantum mechanical pendulum model. Nonlinear interactions are shown to counteract quantum-mechanical dephasing and lead to phase-coherent, superfluid transport.

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Joachim Brand, Andrey R. Kolovsky. 2006-04-21. Emergence of superfluid transport in a dynamical system of ultracold atoms. https://doi.org/10.1140/epjd%2Fe2006-00226-8

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