Crow instability in trapped Bose-Einstein condensates
arXiv:1107.3379 · doi:10.1103/PhysRevA.84.021603
Abstract
We show theoretically that elongated vortex-antivortex dipoles can be created controllably in trapped Bose-Einstein condensates, using known experimental techniques. Vortex dipoles of sufficient length are unstable and cascade into slow vortex rings which ultimately decay via sound emission. This instability of antiparallel vortex line elements, which self-generates Kelvin waves on vortex loops and in trapped atomic gases, may play a role in bridging the Kelvin-wave and Kolmogorov-Richardson cascades of quantum turbulence.
4 pages, 3 figures
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- Vinen turbulence via the decay of multicharged vortices in trapped atomic Bose-Einstein condensates
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- Formation of granular structures in trapped Bose-Einstein condensates under oscillatory excitations
- Vortex gyroscope imaging of planar superfluids
- Finite temperature dynamics of vortices in Bose-Einstein condensates
- Collective dynamics of vortices in trapped Bose-Einstein condensates
- A route to non-Abelian quantum turbulence in spinor Bose-Einstein condensates
- On the Bifurcation and Stability of Single and Multiple Vortex Rings in Three-Dimensional Bose-Einstein Condensates
- Twisted unwinding of multi-charged quantum vortex and generation of turbulence in atomic Bose-Einstein condensates
- Onset of transverse instabilities of confined dark solitons
- Hamiltonian dynamics of two same-sign point vortices
- From Coherent Modes to Turbulence and Granulation of Trapped Gases
- Nonlinearity and Topology
- Macroscopic excitations in confined Bose-Einstein condensates, searching for quantum turbulence
- Crow instability in unitary Fermi gas
- Coherence simplices
- Crow instability of vortex lines in dipolar superfluids