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

Jukka Räbinä, Pekko Kuopanportti, Markus I. Kivioja, Mikko Möttönen, Tuomo Rossi

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
134 Downloads (Pure)

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.

Original languageEnglish
Article number023624
Pages (from-to)1-7
JournalPhysical Review A
Volume98
Issue number2
DOIs
Publication statusPublished - 22 Aug 2018
MoE publication typeA1 Journal article-refereed

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