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

2017/02/08 by Matsui Kosuke, Matsui, Kosuke, John J. Molina +1
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Biological Physics (physics.bio-ph) #Diffusion and Search Dynamics #FOS: Physical sciences #Micro and Nano Robotics #Modular Robots and Swarm Intelligence #Soft Condensed Matter (cond-mat.soft)

paper · pdf · doi:10.48550/arxiv.1702.02379

openalex publication_date 2017/02/08 · openalex created_date 2017/02/24 · openalex updated_date 2026/07/28

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.

Related

• Intrinsic and extrinsic noise effects on the phase transition of swarming systems and related network models
• Noise-induced quenched disorder in dense active systems
• Emergent Organization and Polarization due to Active Fluctuations
• Fluctuation induced network patterns in active matter with spatially correlated noise
• Noise Induced Pattern Switching in Randomly Distributed Delayed Swarm Patterns