Critical mingling and universal correlations in model binary active liquids

Bain Nicolas; Bartolo Denis

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arXiv · 1612.02565

Critical mingling and universal correlations in model binary active liquids

Bain Nicolas·Bartolo Denis

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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.

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Bain Nicolas, Bartolo Denis. 2016-12-08. Critical mingling and universal correlations in model binary active liquids. https://arxiv.org/abs/1612.02565

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