Vortex molecules in Bose-Einstein condensates

Muneto Nitta, Minoru Eto, Mattia Cipriani

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Stable vortex dimers are known to exist in coherently coupled two component Bose-Einstein condensates (BECs). We construct stable vortex trimers in three component BECs and find that the shape can be controlled by changing the internal coherent (Rabi) couplings. Stable vortex N-omers are also constructed in coherently coupled N-component BECs. We classify all possible N-omers in terms of the mathematical graph theory. Next, we study effects of the Rabi coupling in vortex lattices in two-component BECs. We find how the vortex lattices without the Rabi coupling known before are connected to the Abrikosov lattice of integer vortices with increasing the Rabi coupling. In this process, vortex dimers change their partners in various ways at large couplings. We then find that the Abrikosov lattices are robust in three-component BECs.

Original languageEnglish
Pages (from-to)177-188
Number of pages12
JournalJournal of Low Temperature Physics
Volume175
Issue number1-2
DOIs
Publication statusPublished - 2014 Apr

Keywords

  • Bose-Einstein condensates
  • Fractional vortices
  • Graph theory
  • Multi-component
  • Vortex molecules
  • Vortices

ASJC Scopus subject areas

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

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