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Exact Hydrodynamic Description of Active Lattice Gases

Abstract : We introduce a class of lattice gas models of active matter systems whose hydrodynamic description can be derived exactly. We illustrate our approach by considering two systems exhibiting two of the most studied collective behaviours in active matter: the motility-induced phase separation and the transition to collective motion. In both cases, we derive coupled partial differential equation describing the dynamics of the local density and polarization fields and show how they quantitatively predict the emerging properties of the macroscopic lattice gases.
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https://hal.archives-ouvertes.fr/hal-01721363
Contributor : Thierry Bodineau <>
Submitted on : Friday, March 2, 2018 - 8:59:04 AM
Last modification on : Saturday, April 11, 2020 - 1:57:20 AM

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  • HAL Id : hal-01721363, version 1
  • ARXIV : 1801.08952

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Mourtaza Kourbane-Houssene, Clément Erignoux, Thierry Bodineau, Julien Tailleur. Exact Hydrodynamic Description of Active Lattice Gases. Physical Review Letters, American Physical Society, 2018, 120 (26), pp.268003. ⟨hal-01721363⟩

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