Influence of interaction softness on phase separation of active particles

Using a minimal model of active Brownian discs, we study the effect crucial parameter, namely softness inter-particle repulsion, on motility-induced phase separation. We show that an increase in particle reduces ability system to phase-separate and exhibit delayed transition. After separation, state properties can be explained by single relevant lengthscale, effective distance. estimate this lengthscale analytically use it rescale at dense for systems with different interaction softness. provide scaling relation time taken separate which shows high sensitivity