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Dynamics of Motility-Induced clusters: coarsening beyond Ostwald ripening

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SPLW01 - Building a bridge between non-equilibrium statistical physics and biology

Active Brownian Particles undergo Motility Induced Phase Separation, a mechanism whereby they form dense clusters under sufficiently strong energy injection, clusters which grow until the compact phase occupies a finite portion of the sample. I will describe this process and show that standard Oswald ripening combines with aggregation/fragmentation. This entails a rather complex dynamics with clusters undergoing enhanced diffusion, leading to a non-trivial distribution and geometry of clusters during growth, and some other peculiar properties which I will discuss.

This talk is part of the Isaac Newton Institute Seminar Series series.

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