Phase Separation in Active Brownian Particles

Explore a 46-minute lecture on phase separation in active Brownian particles presented by Maria Bruna from the University of Cambridge at the Institut Henri Poincaré. Delve into models for active matter systems comprising self-propelled particles, which are applicable to biological systems like bird flocks, fish schools, and bacterial suspensions. Examine the phenomenon of motility-induced phase separation, where these systems can undergo phase separation without attractive interactions. Follow the progression from a microscopic model of active Brownian particles with repulsive interactions to four potential macroscopic PDEs, ranging from nonlocal models to local cross-diffusion systems. Gain insights into the stability and analysis of these models, enhancing your understanding of complex active matter dynamics.