Splitting times of doubly quantized vortices in dilute bose-einstein condensates

J A M Huhtamäki, M Möttönen, T Isoshima, V Pietilä, S M M Virtanen
Physical Review Letters 2006 September 15, 97 (11): 110406
Recently, the splitting of a topologically created doubly quantized vortex into two singly quantized vortices was experimentally investigated in dilute atomic cigar-shaped Bose-Einstein condensates [Y. Shin, Phys. Rev. Lett. 93, 160406 (2004)10.1103/PhysRevLett.93.160406]. In particular, the dependency of the splitting time on the peak particle density was studied. We present results of theoretical simulations which closely mimic the experimental setup. We show that the combination of gravitational sag and time dependency of the trapping potential alone suffices to split the doubly quantized vortex in time scales which are in good agreement with the experiments.

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