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
AN - SCOPUS:84855902852
VL - 85
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 1
M1 - 013620
ER -