Numerical study of the stability of skyrmions in Bose-Einstein condensates

S. Wüster*, T. E. Argue, C. M. Savage

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    39 Citations (Scopus)

    Abstract

    We show that the stability of three-dimensional skyrmions in trapped Bose-Einstein condensates depends critically on scattering lengths, atom numbers, trap rotation, and trap anisotropy. In particular, for the Rb87F=1,mf=-1, F=2,mf=1 hyperfine states stability is sensitive to the scattering lengths at the 2% level, where the differences between them are crucial. In a cigar shaped trap, we find stable skyrmions with slightly more than 2×106 atoms, a number which scales with the inverse square root of the trap frequency. These can be stabilized against drift out of the trap by laser pinning.

    Original languageEnglish
    Article number043616
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume72
    Issue number4
    DOIs
    Publication statusPublished - Oct 2005

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