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Isotropic vortex tangles in trapped atomic Bose-Einstein condensates via laser stirring

Lookup NU author(s): Dr Joy Allen, Dr Nick Parker, Professor Nikolaos Proukakis, Professor Carlo Barenghi

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).


Abstract

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.


Publication metadata

Author(s): Allen AJ, Parker NG, Proukakis NP, Barenghi CF

Publication type: Article

Publication status: Published

Journal: Physical Review A

Year: 2014

Volume: 89

Print publication date: 28/02/2014

Date deposited: 15/04/2014

ISSN (print): 1050-2947

ISSN (electronic): 1094-1622

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevA.89.025602

DOI: 10.1103/PhysRevA.89.025602


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