Coherent disintegration and stability of vortices in trapped Bose condensates

H. Pu; C. K. Law; J. H. Eberly; N. P. Bigelow

doi:10.1103/PhysRevA.59.1533

Coherent disintegration and stability of vortices in trapped Bose condensates

H. Pu, C. K. Law, J. H. Eberly, and N. P. Bigelow

Phys. Rev. A 59, 1533 – Published 1 February 1999

Abstract

We consider the intrinsic stability of the vortex states of a pure Bose-Einstein condensate confined in a harmonic potential under the effects of a coherent atom-atom interaction. We find that stable vortices can be supported and vortex stability can be controlled by changing the interparticle interaction strength. At unstable regimes, a vortex will spontaneously disintegrate into states with different angular momenta even without external perturbations, with the lifetime determined by its imaginary excitation frequencies.

Received 10 August 1998

DOI:https://doi.org/10.1103/PhysRevA.59.1533

Authors & Affiliations

H. Pu^1,2, C. K. Law², J. H. Eberly², and N. P. Bigelow¹

¹Department of Physics and Astronomy and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627
²Rochester Theory Center for Optical Science and Engineering and Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627

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Vol. 59, Iss. 2 — February 1999

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