Emergence of superfluid transport in a dynamical system of ultracold atoms

Details Emergence of superfluid transport in a dynamical system of ultracold atoms Emergence of superfluid transport in a dynamical system of ultracold atoms

2004-12-21

arxiv.org/abs/cond-mat/0412549v3

Eur. Phys. J. D (2006)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1140/epjd/e2006-00226-8

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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