2021
DOI: 10.48550/arxiv.2103.13220
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Collective effects in confined Active Brownian Particles

Lorenzo Caprini,
Claudio Maggi,
Umberto Marini Bettolo Marconi

Abstract: We investigate a two-dimensional system of active particles confined to a narrow annular domain. Despite the absence of explicit interactions among the velocities or the active forces of different particles, the system displays a transition from a disordered and stuck state to an ordered state of global collective motion where the particles rotate persistently clockwise or anticlockwise. We describe this behavior by introducing a suitable order parameter, the velocity polarization, measuring the global alignme… Show more

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