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 language | English |
|---|---|
| Article number | 013620 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 85 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 17 2012 |
| Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
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Lashkin, V. M., Desyatnikov, A. S., Ostrovskaya, E. A., & Kivshar, Y. S. (2012). Azimuthal vortex clusters in Bose-Einstein condensates. Physical Review A - Atomic, Molecular, and Optical Physics, 85(1), [013620]. https://doi.org/10.1103/PhysRevA.85.013620