Phase diagram, collective dynamics and emergent behaviour in systems of active matter colloids and dumbbells
Active matter reveals how energy-driven units can organize into complex structures and exhibit novel phases of matter. In this presentation, I will discuss a series of computational results on two paradigmatic 2D active matter systems: active Brownian particles (ABP) and active Brownian dumbbells (ABD). I will discuss the phase diagrams of each system as functions of particles activity and density, highlighting the emergence of distinct phases and the ways in which particle shape influences both cluster formation and motility. I will also comment on the distribution of the active work performed in different conditions, showing that a phase transition occurs at the level of fluctuating quantities.