Journal
CHAOS SOLITONS & FRACTALS
Volume 172, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chaos.2023.113531
Keywords
Active particles; Cluster; Collective motion; Chirality
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This study proposes a minimal model for self-propelled chiral particles with inertia, showing different types of vortices. The research finds that cluster size and clustering coefficient increase with particle packing, and classifies three new types of vortices. These findings are important for understanding patterns in nature and designing particles with desired arrangements.
Rotating clusters or vortices are formations of agents that rotate around a common center. These patterns may be found in very different contexts: from swirling fish to surveillance drones. Here, we propose a minimal model for self-propelled chiral particles with inertia, which shows different types of vortices. We consider an attractive interaction for short distances on top of the repulsive interaction that accounts for volume exclusion. We study cluster formation and we find that the cluster size and clustering coefficient increase with the packing of particles. Finally, we classify three new types of vortices: encapsulated, periodic and chaotic. These clusters may coexist and their proportion depends on the density of the ensemble. The results may be interesting to understand some patterns found in nature and to design agents that automatically arrange themselves in a desired formation while exchanging only relative information.
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