Title
Composite vortices in two-component Bose-Einstein condensatesComposite vortices in two-component Bose-Einstein condensates
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Theory of quantum systems and complex systems
Publication type
conferenceObject
Publication
Bristol,
Subject
Physics
Source (journal)
Journal of physics : conference series. - Bristol
Source (book)
21st International Laser Physics Workshop, JUL 23-27, 2012, Calgary, CANADA
Volume/pages
414(2013), p. 1-7
ISSN
1742-6588
1742-6596
Article Reference
012035
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Motivated by the recent observation of composite vortices in two-gap superconductors, we investigate the occurrence and stability of composite vortices in a two-component Bose condensate. As a function of the inter-component interaction strength, the vortices in the two components of the Bose mixture can overlap and form a composite vortex object. However, when two such composite vortices approach each other, their mutual interaction may cause the composite object to dissociate in its component vortices. We derive the phase diagram for the stability of composite vortices as a function of the interaction strengths of the Bose condensates, based on a variational calculation. The effective forces between the component vortices of the composite object are also derived within this approach, and allow for an interpretation of the phase diagram.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/ba95f6/3913.pdf
E-info
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