Splitting Times of Doubly Quantized Vortices in Dilute Bose-Einstein Condensates

J. A. M. Huhtamäki, M. Möttönen, T. Isoshima, V. Pietilä, and S. M. M. Virtanen
Phys. Rev. Lett. 97, 110406 – Published 13 September 2006

Abstract

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 et al., Phys. Rev. Lett. 93, 160406 (2004)]. 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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  • Received 8 March 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.110406

©2006 American Physical Society

Authors & Affiliations

J. A. M. Huhtamäki1, M. Möttönen1,2, T. Isoshima3, V. Pietilä1, and S. M. M. Virtanen1

  • 1Laboratory of Physics, Helsinki University of Technology, P.O. Box 4100, FI-02015 TKK, Finland
  • 2Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 3500, FI-02015 TKK, Finland
  • 3Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan

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Issue

Vol. 97, Iss. 11 — 15 September 2006

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