Two-mode theory of vortex stability in multicomponent Bose-Einstein condensates

Details Two-mode theory of vortex stability in multicomponent Bose-Einstein condensates Two-mode theory of vortex stability in multicomponent Bose-Einstein condensates

1999-12-16

arxiv.org/abs/cond-mat/9912308v1

Phys. Rev. A 62, 033601 (2000)

Physics

Condensed Matter

submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.62.033601

We study the stability and dynamics of vortices in two-species condensates using a two mode model. The recent experimental results obtained at JILA (M. R. Matthews, {\em et al.}, Phys. Rev. Lett. 83 (1999) 2498) and theoretical predictions based on the Gross-Pitaevskii equations are verified. We also make an exhaustive analysis of the stability properties of the system when the relative populations of the two species and/or their relative scattering lengths are changed and prove that stabilization of otherwise unstable configurations can be attained by controlling the relative population of both species.

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