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Dynamical evolution of a doubly-quantized vortex imprinted in a Bose-Einstein Condensate | | A. Muñoz Mateo
; V. Delgado
; | | Date: |
4 Jun 2006 | | Subject: | Other | | Abstract: | The recent experiment by Y. Shin emph{et al.} [Phys. Rev. Lett. extbf{93}, 160406 (2004)] on the decay of a doubly quantized vortex imprinted in $^{23}% $Na condensates is analyzed by numerically solving the Gross-Pitaevskii equation. Our results, which are in very good quantitative agreement with the experiment, demonstrate that the vortex decay is mainly a consequence of dynamical instability. Despite apparent contradictions, the local density approach is consistent with the experimental results. The monotonic increase observed in the vortex lifetimes is a consequence of the fact that, for large condensates, the measured lifetimes incorporate the time it takes for the initial perturbation to reach the central slice. When considered locally, the splitting occurs approximately at the same time in every condensate, regardless of its size. | | Source: | arXiv, cond-mat/0606092 | | Services: | Forum | Review | PDF | Favorites | |
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