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 |
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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 journal › Article
}
TY - JOUR
T1 - Azimuthal vortex clusters in Bose-Einstein condensates
AU - Lashkin, Volodymyr M.
AU - Desyatnikov, Anton S.
AU - Ostrovskaya, Elena A.
AU - Kivshar, Yuri S.
PY - 2012/1/17
Y1 - 2012/1/17
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84855902852&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855902852&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.85.013620
DO - 10.1103/PhysRevA.85.013620
M3 - Article
VL - 85
JO - Physical Review A
JF - Physical Review A
SN - 1050-2947
IS - 1
M1 - 013620
ER -