Dresden 2017 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 54: Active Matter II (joint session DY/BP/CPP, organized by DY)

CPP 54.12: Talk

Thursday, March 23, 2017, 12:45–13:00, HÜL 186

Green-Kubo approach to active Brownian systems — •abhinav sharma and joseph Brader — Universite de Fribourg, Rue du Musee 3, ch 1700, Fribourg

We develop an exact Green-Kubo formula relating nonequilibrium averages in systems of interacting active Brownian particles to equilibrium time-correlation functions. The method is applied to calculate the density-dependent average swim speed, which is a key quantity entering coarse grained theories of active matter. The average swim speed is determined by integrating the equilibrium autocorrelation function of the interaction force acting on a tagged particle. We generalize our approach to a spatially and time varying activity. Analytical results are validated using Brownian dynamics simulations.