English

Exact exact solutions of the Gross-Pitaevskii equation for stable vortex modes

Quantum Gases 2010-06-21 v1 Mathematical Physics math.MP Optics

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 S2S\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.

Keywords

Cite

@article{arxiv.1006.3695,
  title  = {Exact exact solutions of the Gross-Pitaevskii equation for stable vortex modes},
  author = {Lei Wu and Lu Li and Jie-Fang Zhang and Dumitru Mihalache and Boris A. Malomed and W. M. Liu},
  journal= {arXiv preprint arXiv:1006.3695},
  year   = {2010}
}

Comments

5 pages, 6 figures, to appear in Phys. Rev. A