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arXiv · 0705.1802

On-top fragmentation stabilizes atom-rich attractive Bose-Einstein condensates

Lorenz S. Cederbaum·Alexej I. Streltsov·Ofir E. Alon
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Abstract

It is well known that attractive condensates do not posses a stable ground state in three dimensions. The widely used Gross-Pitaevskii theory predicts the existence of metastable states up to some critical number $N_{\mathrm{cr}}^{\mathrm{GP}}$ of atoms. It is demonstrated here that fragmented metastable states exist for atom numbers well above $N_{\mathrm{cr}}^{\mathrm{GP}}$. The fragments are strongly overlapping in space. The results are obtained and analyzed analytically as well as numerically. The implications are discussed.

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Lorenz S. Cederbaum, Alexej I. Streltsov, Ofir E. Alon. 2007-05-12. On-top fragmentation stabilizes atom-rich attractive Bose-Einstein condensates. https://doi.org/10.1103/physrevlett.100.040402

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