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Critical mingling and universal correlations in model binary active liquids

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  • Nicolas Bain

    (Univ Lyon, Ens de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique)

  • Denis Bartolo

    (Univ Lyon, Ens de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique)

Abstract

Ensembles of driven or motile bodies moving along opposite directions are generically reported to self-organize into strongly anisotropic lanes. Here, building on a minimal model of self-propelled bodies targeting opposite directions, we first evidence a critical phase transition between a mingled state and a phase-separated lane state specific to active particles. We then demonstrate that the mingled state displays algebraic structural correlations also found in driven binary mixtures. Finally, constructing a hydrodynamic theory, we single out the physical mechanisms responsible for these universal long-range correlations typical of ensembles of oppositely moving bodies.

Suggested Citation

  • Nicolas Bain & Denis Bartolo, 2017. "Critical mingling and universal correlations in model binary active liquids," Nature Communications, Nature, vol. 8(1), pages 1-6, December.
  • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15969
    DOI: 10.1038/ncomms15969
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