Three-dimensional splitting dynamics of giant vortices in Bose-Einstein condensates

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http://hdl.handle.net/10138/241226

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Räbinä , J , Kuopanportti , P , Kivioja , M I , Möttönen , M & Rossi , T 2018 , ' Three-dimensional splitting dynamics of giant vortices in Bose-Einstein condensates ' , Physical Review A , vol. 98 , no. 2 , 023624 . https://doi.org/10.1103/PhysRevA.98.023624

Title: Three-dimensional splitting dynamics of giant vortices in Bose-Einstein condensates
Author: Räbinä, Jukka; Kuopanportti, Pekko; Kivioja, Markus I.; Möttönen, Mikko; Rossi, Tuomo
Contributor: University of Helsinki, Department of Physics
Date: 2018-08-22
Language: eng
Number of pages: 7
Belongs to series: Physical Review A
ISSN: 2469-9926
URI: http://hdl.handle.net/10138/241226
Abstract: We study the splitting dynamics of giant vortices in dilute Bose-Einstein condensates by numerically integrating the three-dimensional Gross-Pitaevskii equation in time. By taking advantage of tetrahedral tiling in the spatial discretization, we decrease the error and increase the reliability of the numerical method. An extensive survey of vortex splitting patterns is presented for different aspect ratios of the harmonic trapping potential. The discrete rotational symmetries of the splitting patterns that emerge in the time evolution are in good agreement with predictions obtained by solving the prevailing dynamical instabilities from the Bogoliubov equations. Furthermore, we observe intertwining of the split vortices in prolate condensates and a split-and-revival phenomenon in a spherical condensate.
Subject: GROSS-PITAEVSKII EQUATION
YEE-LIKE SCHEMES
NUMERICAL-SOLUTION
MAXWELLS EQUATIONS
SUPERFLOW
STABILITY
MONOPOLES
EFFICIENT
VORTEX
GASES
114 Physical sciences
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