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arXiv · 1712.08937

Static Structure of Active Brownian Hard Disks

Nadine de Macedo Biniossek·Hartmut Löwen·Thomas Voigtmann·Frank Smallenburg
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Abstract

We explore the changes in static structure of a two-dimensional system of active Brownian particles (ABP) with hard-disk interactions, using event-driven Brownian dynamics simulations. In particular, the effect of the self-propulsion velocity and the rotational diffusivity on the orientationally-averaged fluid structure factor is discussed. Typically activity increases structural ordering and generates a structure factor peak at zero wave vector which is a precursor of motility-induced phase separation. Our results provide reference data to test future statistical theories for the fluid structure of active Brownian systems.

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Nadine de Macedo Biniossek, Hartmut Löwen, Thomas Voigtmann, Frank Smallenburg. 2017-12-24. Static Structure of Active Brownian Hard Disks. https://doi.org/10.1088/1361-648x%2Faaa3bf

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