Connection of vortices between spatially different phases in two-component bose-einstein condensates

Kenichi Kasamatsu, Hiromitsu Takeuchi, Muneto Nitta, Makoto Tsubota

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We study interfacial topological defects called boojums, a vortex ending or a connecting point of two kinds of vortex cores, in rotating two-component Bose-Einstein condensates. First, we show that the boojum exists at a vortex ending that connects to the interface of the strongly phase-separated condensates. Next, we study various boojums appearing between two phases characterized by different vortex structures, where the intercomponent s-wave scattering lengths are spatially varied. Using three-dimensional simulations of the Gross-Pitaevskii equations, we reveal the detailed structure of the boojums by visualizing its density distribution and effective superflow vorticity.

Original languageEnglish
Pages (from-to)99-104
Number of pages6
JournalJournal of Low Temperature Physics
Issue number1-2
Publication statusPublished - 2010 Jan


  • Bose-Einstein condensate
  • Multicomponent
  • Topological defect
  • Vortex

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics


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