Dissipative dynamics of a vortex state in a trapped Bose-condensed gas

Details Dissipative dynamics of a vortex state in a trapped Bose-condensed gas Dissipative dynamics of a vortex state in a trapped Bose-condensed gas

1999-02-14

arxiv.org/abs/cond-mat/9902204v3

Physics

Condensed Matter

Soft Condensed Matter

4 pages, major corrections in friction coefficients calculation

Scientific paper

10.1103/PhysRevA.60.R1779

We discuss dissipative dynamics of a vortex state in a trapped Bose-condensed gas at finite temperature and draw a scenario of decay of this state in a static trap. The interaction of the vortex with the thermal cloud transfers energy from the vortex to the cloud and induces the motion of the vortex core to the border of the condensate. Once the vortex reaches the border, it immediately decays through the creation of excitations. We calculate the characteristic life-time of a vortex state and address the question of how the dissipative dynamics of vortices can be studied experimentally.

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