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Splitting dynamics of doubly quantized vortices in Bose-Einstein condensates
Umeå University, Faculty of Science and Technology, Department of Physics.
2008 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 77, no 013604Article in journal (Refereed) Published
Abstract [en]

We study the nonlinear dynamics of the splitting of a doubly quantized vortex in a trapped Bose-Einstein condensate. The dynamics is studied in detail by solving the Gross-Pitaevskii equation. The main dynamical features are explained in terms of a nonlinear three-level system, to which we find an analytical solution. This result is compared to linear Bogoliubov analysis and to the full numerical time evolution. It is concluded that the time scale for the splitting is mainly determined by the instability of the linearized system, and nonlinear effects contribute logarithmically.

Place, publisher, year, edition, pages
2008. Vol. 77, no 013604
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:umu:diva-8302DOI: doi:10.1103/PhysRevA.77.013604OAI: oai:DiVA.org:umu-8302DiVA: diva2:147973
Available from: 2008-01-16 Created: 2008-01-16 Last updated: 2017-12-14Bibliographically approved

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