Effective Cahn-Hilliard Equation for the Phase Separation of Active Brownian Particles
Effective Cahn-Hilliard Equation for the Phase Separation of Active Brownian Particles
The kinetic separation of repulsive active Brownian particles into a dense and a dilute phase is analyzed using a systematic coarse-graining strategy. We derive an effective Cahn-Hilliard equation on large length and time scales, which implies that the separation process can be mapped onto that of passive particles. A lower …