Phase dynamics of Bose-Einstein condensates: Losses versus revivals |
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Authors: | A. Sinatra Y. Castin |
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Affiliation: | (1) Laboratoire Kastler Brossel (Unité de recherche de l'école Normale Supérieure et de l'université Pierre et Marie Curie, associée au CNRS.), 24 rue Lhomond, 75231 Paris Cedex 5, France, FR |
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Abstract: | In the absence of losses the phase of a Bose-Einstein condensate undergoes collapses and revivals in time due to elastic atomic interactions. As experiments necessarily involve inelastic collisions, we develop a model to describe the phase dynamics of the condensates in presence of collisional losses. We find that a few inelastic processes are sufficient to damp the revivals of the phase. For this reason the observability of phase revivals for present experimental conditions is limited to condensates with a few hundreds of atoms. Received: 23 February 1998 / Revised: 21 July 1998 / Accepted: 23 July 1998 |
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Keywords: | PACS. 03.75.Fi Phase coherent atomic ensemble (Bose condensation) - 05.30.Jp Boson systems |
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