Short-range intervortex interaction and interacting dynamics of half-quantized vortices in two-component Bose-Einstein condensates

Kenichi Kasamatsu, Minoru Eto, Muneto Nitta

研究成果: Article査読

34 被引用数 (Scopus)

抄録

We study the interaction and dynamics of two half-quantized vortices in two-component Bose-Einstein condensates. Using the Padé approximation for the vortex core profile, we calculate the intervortex potential, whose asymptotic form for a large distance has been derived by Eto et al. [Phys. Rev. A 83, 063603 (2011)PLRAAN1050-294710.1103/PhysRevA.83.063603]. Through numerical simulations of the two-dimensional Gross-Pitaevskii equations, we reveal different kinds of dynamical trajectories of the vortices depending on the combinations of signs of circulations and the intercomponent density coupling. Under the adiabatic limit, we derive the equations of motion for the vortex coordinates, in which the motion is caused by the balance between Magnus force and the intervortex forces. The initial velocity of the vortex motion can be explained quantitatively by this point vortex approximation, but understanding the long-time behavior of the dynamics needs more consideration beyond our model.

本文言語English
論文番号013615
ジャーナルPhysical Review A
93
1
DOI
出版ステータスPublished - 2016 1 19

ASJC Scopus subject areas

  • 原子分子物理学および光学

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