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Turbulence in binary Bose-Einstein condensates generated by highly nonlinear Rayleigh-Taylor and Kelvin-Helmholtz instabilities

D. Kobyakov ; A. Bezett ; E. Lundh ; Mattias Marklund (Institutionen för teknisk fysik, Kondenserade materiens teori) ; V. Bychkov
Physical Review A (1050-2947). Vol. 89 (2014), 1,
[Artikel, refereegranskad vetenskaplig]

Quantum turbulence (QT) generated by the Rayleigh-Taylor instability in binary immiscible ultracold Rb-87 atoms at zero temperature is studied theoretically. We show that the quantum vortex tangle is qualitatively different from previously considered superfluids, which reveals deep relations between QT and classical turbulence. The present QT may be generated at arbitrarily small Mach numbers, which is a unique property not found in previously studied superfluids. By numerical solution of the coupled Gross-Pitaevskii equations we find that the Kolmogorov scaling law holds for the incompressible kinetic energy. We demonstrate that the phenomenon may be observed in the laboratory.

Nyckelord: SUPERFLUID TURBULENCE, QUANTUM TURBULENCE, VORTEX STRUCTURES, DYNAMICS



Denna post skapades 2014-06-19. Senast ändrad 2015-01-09.
CPL Pubid: 199413

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)

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Den kondenserade materiens fysik

Chalmers infrastruktur