Vortex solitons in dipolar Bose-Einstein Condensates
arXiv:0809.4356 · doi:10.1103/PhysRevA.78.043614
Abstract
We predict solitary vortices in quasi-planar condensates of dipolar atoms, polarized parallel to the confinement direction, with the effective sign of the dipole-dipole interaction inverted by means of a rapidly rotating field. Energy minima corresponding to vortex solitons with topological charges ${% \ell}=1$ and 2 are predicted for moderately strong dipole-dipole interaction, using an axisymmetric Gaussian ansatz. The stability of the solitons with is confirmed by full 3D simulations, whereas their counterparts with are found to be unstable against splitting into a set of four fragments (quadrupole).
6 pages, 6 figures
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