Decay of multiply charged vortices at nonzero temperatures

Details Decay of multiply charged vortices at nonzero temperatures Decay of multiply charged vortices at nonzero temperatures

2008-06-02

arxiv.org/abs/0806.0244v1

J. Phys. B: At. Mol. Opt. Phys. 42 No 9 (14 May 2009) 095301 (6pp)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 6 figures

Scientific paper

10.1088/0953-4075/42/9/095301

We study the instability of multiply charged vortices in the presence of thermal atoms and find various scenarios of splitting of such vortices. The onset of the decay of a vortex is always preceded by the increase of a number of thermal (uncondensed) atoms in the system and manifests itself by the sudden rise of the amplitude of the oscillations of the quadrupole moment. Our calculations show that the decay time gets shorter when the multiplicity of a vortex becomes higher.

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