Evolution of large-scale flow from turbulence in a two-dimensional superfluid

@article{Johnstone2019EvolutionOL,
  title={Evolution of large-scale flow from turbulence in a two-dimensional superfluid},
  author={Shaun P. Johnstone and Andrew J. Groszek and Philip T. Starkey and Christopher J. Billington and Tapio P. Simula and Kristian Helmerson},
  journal={Science},
  year={2019},
  volume={364},
  pages={1267-1271}
}
  • Shaun P. Johnstone, Andrew J. Groszek, +3 authors Kristian Helmerson
  • Published 2019
  • Physics, Medicine
  • Science
  • Nonequilibrium interacting systems can evolve to exhibit large-scale structure and order. In two-dimensional turbulent flow, the seemingly random swirling motion of a fluid can evolve toward persistent large-scale vortices. To explain such behavior, Lars Onsager proposed a statistical hydrodynamic model based on quantized vortices. Here, we report on the experimental confirmation of Onsager’s model. We dragged a grid barrier through an oblate superfluid Bose–Einstein condensate to generate… CONTINUE READING

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