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Linear response approach to active Brownian particles in time-varying activity fields

Merlitz, Holger ; Vuijk, Hidde D. ; Brader, Joseph M. ; Sharma, Abhinav ; Sommer, Jens-Uwe

In: The Journal of Chemical Physics, 2018, vol. 148, no. 19, p. 194116

In a theoretical and simulation study, active Brownian particles (ABPs) in three- dimensional bulk systems are exposed to time-varying sinusoidal activity waves that are running through the system. A linear response (Green-Kubo) formalism is applied to derive fully analytical expressions for the torque-free polarization profiles of non- interacting particles. The activity waves induce fluxes...