Interaction of half-quantized vortices in two-component Bose-Einstein condensates

Details Interaction of half-quantized vortices in two-component Bose-Einstein condensates Interaction of half-quantized vortices in two-component Bose-Einstein condensates

2011-03-31

arxiv.org/abs/1103.6144v1

Phys.Rev.A83:063603,2011

Physics

Condensed Matter

Quantum Gases

9 pages, 5 figures

Scientific paper

10.1103/PhysRevA.83.063603

We study the asymptotic interaction between two half-quantized vortices in two-component Bose-Einstein condensates. When two vortices in different components are placed at distance 2R, the leading order of the force between them is found to be (log R/\xi-1/2)/R^3, in contrast to 1/R between vortices placed in the same component. We derive it analytically using the Abrikosov ansatz and the profile functions of the vortices, confirmed numerically with the Gross-Pitaevskii model. We also find that the short-range cutoff of the inter-vortex potential linearly depends on the healing length.

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