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AIP conference proceedings

Long Range Interactions Between Neutral Atoms

G. L. Gattobigio, F. Michaud, G. Labeyrie, Thomas Pohl, Robin Kaiser

Published Jan 1, 2006• 5 citations
Publisher
DOI
10.1063/1.2387926

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AIP conference proceedings•Jan 1, 2008•1 citation
We present in this paper a review of our work on the impact of long‐range interactions on the static and dynamic behaviors of magneto‐optical traps (MOT) for neutral atoms. In such systems, all forces (confinement and interaction) are mediated by light. The most obvious signature of long‐range interactions is the dependence of the MOT size with number N of trapped atoms. We study in detail the scaling laws for the MOT size versus N, in a range of large N≫108. We then show that the competition between confinement and repulsive interaction can lead, for N large, to a new dynamical instability characterized by spontaneous, self‐sustained oscillations of the MOT. This instability is investigated experimentally and theoretically, using both a simple analytical model and a more refined numerical one.