Turbulence in binary Bose-Einstein condensates generated by highly nonlinear Rayleigh-Taylor and Kelvin-Helmholtz instabilities
2014 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 89, 013631- p.Article in journal (Refereed) Published
Quantum turbulence (QT) generated by the Rayleigh-Taylor instability in binary immiscible ultracold 87Rb 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.
Place, publisher, year, edition, pages
American Physical Society , 2014. Vol. 89, 013631- p.
turbulence, Bose-Einstein condensation, ultracold gases, superfluids
Atom and Molecular Physics and Optics Atom and Molecular Physics and Optics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-85400DOI: 10.1103/PhysRevA.89.013631ISI: 000335225700010OAI: oai:DiVA.org:umu-85400DiVA: diva2:693122