Exact exact solutions of the Gross-Pitaevskii equation for stable vortex modes
classification
❄️ cond-mat.quant-gas
math-phmath.MPphysics.optics
keywords
equationexactgross-pitaevskiimodesnonlinearitysolutionsstableapproximate
read the original abstract
We construct exact solutions of the Gross-Pitaevskii equation for solitary vortices, and approximate ones for fundamental solitons, in 2D models of Bose-Einstein condensates with a spatially modulated nonlinearity of either sign and a harmonic trapping potential. The number of vortex-soliton (VS) modes is determined by the discrete energy spectrum of a related linear Schr\"{o}dinger equation. The VS families in the system with the attractive and repulsive nonlinearity are mutually complementary. \emph{% Stable} VSs with vorticity $S\geq 2$ and those corresponding to higher-order radial states are reported for the first time, in the case of the attraction and repulsion, respectively.
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