Rotating cluster formations emerge in an ensemble of active particles

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 minimal model for self-propelled chiral particles with inertia, which shows types vortices. We consider an attractive interaction short distances on top the repulsive accounts volume exclusion. study cluster formation and find size clustering coefficient increase packing particles. Finally, classify three new vortices: encapsulated, periodic chaotic. coexist their proportion depends density ensemble. The results interesting understand some nature design automatically arrange themselves desired while exchanging only relative information.