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arXiv · 1907.11437

Spatial Organization of Active Particles with Field Mediated Interactions

Ruben Zakine·Jean-Baptiste Fournier·Frédéric van Wijland
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Abstract

We consider a system of independent point-like particles performing a Brownian motion while interacting with a Gaussian fluctuating background. These particles are in addition endowed with a discrete two-state internal degree of freedom that is subjected to a nonequilibrium source of noise, which affects their coupling with the background field. We explore the phase diagram of the system and pinpoint the role of the nonequilibrium drive in producing a nontrivial patterned spatial organization. We are able, by means of a weakly nonlinear analysis, to account for the parameter-dependence of the boundaries of the phase and pattern diagram in the stationary state.

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Ruben Zakine, Jean-Baptiste Fournier, Frédéric van Wijland. 2019-07-26. Spatial Organization of Active Particles with Field Mediated Interactions. https://doi.org/10.1103/physreve.101.022105

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