Lookup NU author(s): Dr Joy Allen,
Dr Nick Parker,
Professor Nikolaos Proukakis,
Professor Carlo Barenghi
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
The generation of isotropic vortex configurations in trapped atomic Bose-Einstein condensates offers a platform to elucidate quantum turbulence on mesoscopic scales. We demonstrate that a laser-induced obstacle moving in a figure-8 path within the condensate provides a simple and effective means to generate an isotropic three-dimensional vortex tangle due to its minimal net transfer of angular momentum to the condensate. Our characterization of vortex structures and their isotropy is based on projected vortex lengths and velocity statistics obtained numerically via the Gross-Pitaevskii equation. Our methodology provides a possible experimental route for generating and characterizing vortex tangles and quantum turbulence in atomic Bose-Einstein condensates.
Author(s): Allen AJ, Parker NG, Proukakis NP, Barenghi CF
Publication type: Article
Publication status: Published
Journal: Physical Review A
Print publication date: 28/02/2014
Date deposited: 15/04/2014
ISSN (print): 1050-2947
ISSN (electronic): 1094-1622
Publisher: American Physical Society
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