Stability of a vortex in a trapped Bose-Einstein condensate Academic Article uri icon


  • Based on the method of matched asymptotic expansions and on a time-dependent variational analysis, we study the dynamics of a vortex in a three-dimensional disk-shaped nonaxisymmetric condensate in the Thomas-Fermi limit. Both methods show that a vortex in a trapped Bose-Einstein condensate has formally unstable normal mode(s) with positive normalization and negative frequency, corresponding to a precession of the vortex line around the center of the trap. In a rotating trap, the solution becomes stable above an angular velocity, characterizing the onset of metastability with respect to small transverse displacements of the vortex from the central axis. © 2000 American Physical Society.

published proceedings

  • Physical Review Letters

author list (cited authors)

  • Svidzinsky, A. A., & Fetter, A. L.

citation count

  • 139

complete list of authors

  • Svidzinsky, AA||Fetter, AL

publication date

  • January 2000