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26 April 2024

» arxiv » 0907.3077

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Core sizes and dynamic instabilities of giant vortices in dilute Bose-Einstein condensates
Pekko Kuopanportti ; Emil Lundh ; Jukka Huhtamäki ; Ville Pietilä ; Mikko Möttönen ;
Date:	17 Jul 2009
Abstract:	Motivated by recent demonstration of cyclic addition of quantized vorticity into a Bose-Einstein condensate, the vortex pump, we study dynamic instabilities and core sizes of giant vortices. The core size is found to increase roughly as a square-root function of the quantum number of the vortex, whereas the strength of the dynamic instability either saturates to a fairly low value or increases extremely slowly for large quantum numbers. Our studies suggest that giant vortices of very high angular momenta may be achieved by gradually increasing the operation frequency of the vortex pump.
Source:	arXiv, 0907.3077
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