A mechanism for anomalous transport in chiral active liquids

ZH Liao and M Han and M Fruchart and V Vitelli and S Vaikuntanathan, JOURNAL OF CHEMICAL PHYSICS, 151, 194108 (2019).

DOI: 10.1063/1.5126962

Chiral active fluids are known to have anomalous transport properties such as the so-called odd viscosity. In this paper, we provide a microscopic mechanism for how such anomalous transport coefficients can emerge. We construct an Irving-Kirkwood-type stress tensor for chiral liquids and express the transport coefficients in terms of orientation- averaged intermolecular forces and distortions of the pair correlation function induced by a flow field. We then show how anomalous transport properties can be expected naturally due to the presence of a transverse component in the orientation-averaged intermolecular forces and anomalous distortion modes of the pair correlation function between chiral active particles. We anticipate that our work can provide a microscopic framework to explain the transport properties of nonequilibrium chiral systems. Published under license by AIP Publishing.

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