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arXiv · 0805.0531

Differences between mean-field dynamics and N-particle quantum dynamics as a signature of entanglement

Christoph Weiss·Niklas Teichmann
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Abstract

A Bose-Einstein condensate in a tilted double-well potential under the influence of time-periodic potential differences is investigated in the regime where the mean-field (Gross-Pitaevskii) dynamics become chaotic. For some parameters near stable regions, even averaging over several condensate oscillations does not remove the differences between mean-field and N-particle results. While introducing decoherence via piecewise deterministic processes reduces those differences, they are due to the emergence of mesoscopic entangled states in the chaotic regime.

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Christoph Weiss, Niklas Teichmann. 2008-05-05. Differences between mean-field dynamics and N-particle quantum dynamics as a signature of entanglement. https://doi.org/10.1103/physrevlett.100.140408

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