Spatiotemporal vortex rings in atomic Bose–Einstein condensates

We investigate spatiotemporal vortex rings with phase dislocation both in space and time. It is demonstrated that these structures naturally appear as a periodical in time edge phase dislocation at the low-density region of a perturbed atomic Bose–Einstein condensate. The condition of formation, dyn...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2019-08, Vol.45 (8), p.908-913
Main Authors: Chelpanova, O. G., Kuriatnikov, Y. I., Vilchinskii, S., Yakimenko, A. I.
Format: Article
Language:English
Subjects:
Bose-Einstein condensates
Dislocation density
Dynamic stability
Vortex rings
Vortices
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Summary:We investigate spatiotemporal vortex rings with phase dislocation both in space and time. It is demonstrated that these structures naturally appear as a periodical in time edge phase dislocation at the low-density region of a perturbed atomic Bose–Einstein condensate. The condition of formation, dynamics and stability of the spatiotemporal vortex rings are investigated for repulsive and attractive interatomic interactions. These theoretical findings open up a perspective for experimental observation of novel type of topological coherent structures in ultracold gases.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.5116542