Core sizes and dynamical instabilities of giant vortices in dilute Bose-Einstein condensates
2010 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 81, no 2, 023603Article in journal (Refereed) Published
Motivated by a recent demonstration of cyclic addition of quantized vorticity into a Bose-Einstein condensate, the vortex pump, we study dynamical 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 dynamical 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.
Place, publisher, year, edition, pages
American Physical Society , 2010. Vol. 81, no 2, 023603
IdentifiersURN: urn:nbn:se:umu:diva-109581DOI: 10.1103/PhysRevA.81.023603ISI: 000275072500142OAI: oai:DiVA.org:umu-109581DiVA: diva2:858750