Azimuthal vortex clusters in Bose-Einstein condensates

Volodymyr M. Lashkin, Anton S. Desyatnikov, Elena A. Ostrovskaya, Yuri S. Kivshar

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We describe, analytically and numerically, topologically nontrivial stationary states with azimuthal modulation of density in a repulsive Bose-Einstein condensate (BEC) confined in a harmonic trap. We show that, depending on the number of density peaks and total topological charge, these states can have a sophisticated phase texture associated with a vortex cluster. For a given topological charge, the form of density distribution and the structure of phase singularities are uniquely linked, thus simultaneous phase and density modulation enforces the formation of a vortex cluster both in rotating and in nonrotating BEC clouds.

Original languageEnglish
Article number013620
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume85
Issue number1
DOIs
Publication statusPublished - Jan 17 2012
Externally publishedYes

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Bose-Einstein condensates
vortices
modulation
phase modulation
density distribution
textures
traps
harmonics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Azimuthal vortex clusters in Bose-Einstein condensates. / Lashkin, Volodymyr M.; Desyatnikov, Anton S.; Ostrovskaya, Elena A.; Kivshar, Yuri S.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 85, No. 1, 013620, 17.01.2012.

Research output: Contribution to journalArticle

Lashkin, Volodymyr M. ; Desyatnikov, Anton S. ; Ostrovskaya, Elena A. ; Kivshar, Yuri S. / Azimuthal vortex clusters in Bose-Einstein condensates. In: Physical Review A - Atomic, Molecular, and Optical Physics. 2012 ; Vol. 85, No. 1.
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