Spontaneous Radiation and Amplification of Kelvin Waves on Quantized Vortices in Bose-Einstein Condensates
arXiv:0812.0863 · doi:10.1103/PhysRevA.79.033619
Abstract
We propose a different type of Landau instability in trapped Bose-Einstein condensates by a helically moving environment. In the presence of quantized vortices, the instability can cause spontaneous radiation and amplification of Kelvin waves. This study gives a microscopic understanding of the Donnelly-Glaberson instability which was known as a hydrodynamic instability in superfluid helium. The Donnelly-Glaberson instability can be a powerful tool for observing the dispersion relation of Kelvin waves, vortex reconnections, and quantum turbulence in atomic Bose-Einstein condensates.
5 pages, 5 figures
References in corpus (6)
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- Quantum Turbulence
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Cited by in corpus (7)
- Quantum hydrodynamics
- Nambu-Goldstone modes in segregated Bose-Einstein condensates
- Instability crossover of helical shear flow in segregated Bose-Einstein condensates
- Phase diagram of vortices in the polar phase of spin-1 Bose-Einstein condensates
- Kelvin wave in miscible two-component Bose-Einstein condensates
- Kelvin-Wave-Inspired Optical Vortex Excitation in Kerr Nonlinear Media
- Crow instability of vortex lines in dipolar superfluids