Bose-Einstein condensate collapse: A comparison between theory and experiment

2002/07/12 by C. M. Savage, N. P. Robins, J. J. Hope · 4 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #Strong Light-Matter Interactions #cond-mat

paper · pdf · doi:10.1103/physreva.67.014304

published as Phys. Rev. A 67, 014304 (2003) · 4 pages, 2 figures

arxiv created 2002/07/12 · openalex publication_date 2003/01/28 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We solve the Gross-Pitaevskii equation numerically for the collapse induced by a switch from positive to negative scattering lengths. We compare our results with experiments performed with Bose-Einstein condensates of ⁸⁵Rb, in which the scattering length was controlled using a Feshbach resonance. Building on previous theoretical work we identify quantitative differences between the predictions of mean-field theory and the results of the experiments. In addition to the previously reported difference between the predicted and observed critical atom number for collapse, we also find that the predicted collapse times systematically exceed those observed experimentally.

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• Bose–Einstein condensation dynamics in three dimensions by the pseudospectral and finite-difference methods

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