Shear-flow Instability in Two-component Bose-Einstein Condensates
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Abstract
We theoretically study Kelvin-Helmholtz instability in phase-separated two-component Bose-Einstein condensates with shear flow at T=0. The stability of the shear flow state is investigated with the Gross-Pitaevskii and the Bogoliubov-de Gennes models, compared with a hydrodynamic model. The dynamics of the instability is revealed by numerically solving the Gross-Pitaevskii equation. In the nonlinear development, singly-quantized vortices are released from the interface between the two condensates.
Keywords
Kelvin-Helmholtz instability Superfluid Quantized vortices Bose-Einstein condensatesPACS
03.75.Kk 03.75.Mn 05.30.JpReferences
- 1.H. von Helmholtz, Philos. Mag. 36, 337 (1868) Google Scholar
- 2.Lord Kelvin, Philos. Mag. 42, 362 (1871) Google Scholar
- 3.H. Lamb, Hydrodynamics (Dover, New York, 1945) Google Scholar
- 4.R. Blaauwgeers, V.B. Eltsov, G. Eska, A.P. Finne, R.P. Haley, M. Krusius, J.J. Ruohio, L. Skrbek, G.E. Volovik, Phys. Rev. Lett. 89, 155301 (2002) CrossRefADSGoogle Scholar
- 5.G.E. Volovik, The Universe in a Helium Droplet (Clarendon Press, Oxford, 2003) MATHGoogle Scholar
- 6.E. Timmermans, Phys. Rev. Lett. 81, 5718 (1998) CrossRefADSGoogle Scholar
- 7.Bert Van Schaeybroeck, Phys. Rev. A 78, 023624 (2008) CrossRefADSGoogle Scholar
- 8.U. Al Khawaja, C.J. Pethick, H. Smith, Phys. Rev. A 60, 1507 (1999) CrossRefADSGoogle Scholar
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