Numerical study of the stability of skyrmions in Bose-Einstein condensates
Date
2005
Authors
Wuester, Sebastian
Argue, T
Savage, Craig
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Volume Title
Publisher
American Physical Society
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.
Description
Keywords
Keywords: Skyrmions; Trap frequency; Lasers; Numerical analysis; Stability; Quantum theory
Citation
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Source
Physical Review A: Atomic, Molecular and Optical Physics
Type
Journal article
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DOI
10.1103/PhysRevA.72.043616