Noise induced phase separation in active systems: Creating patterns with noise

Kosuke Matsui; John J. Molina

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arXiv · 1702.02379

Noise induced phase separation in active systems: Creating patterns with noise

Kosuke Matsui·John J. Molina

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Abstract

We study the flocking and pattern formations of active particles with a Vicsek-like model that includes a configuration dependent noise term. In particular, we couple the strength of the noise with both the local density and orientation of neighboring particles. Our results show that such a configuration dependent noise can lead to the appearance of large-scale ordered and disordered patterns, without the need for any complex alignment interactions. In particular, we obtain an ordered band or line state and a disordered active cluster, similar to that seen in the case of motility induced phase separation.

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Kosuke Matsui, John J. Molina. 2017-02-08. Noise induced phase separation in active systems: Creating patterns with noise. https://arxiv.org/abs/1702.02379

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