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

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

2007-05-12

arxiv.org/abs/0705.1802v1

Phys. Rev. Lett. 100, 040402 (2008); [published with modified title]

Physics

Condensed Matter

Other Condensed Matter

12 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.100.040402

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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