1305.6475 (M. Paoluzzi et al.)

Effective run-and-tumble dynamics of bacteria baths    [PDF]

M. Paoluzzi, R. Di Leonardo, L. Angelani

Run and tumble is one of the simplest model to describe the dynamics of a broad class of active systems. Performing intensive Molecular Dynamics Simulations of an active and interacting bacterial bath, through the study of the Dynamic Structure Factor, we are able to describe the system with a free run-and-tumble model with effective parameters. We discuss the dependence of the active parameters, e.g., the tumbling rate, tumbling time and self-propulsion velocity, on the density of the bath.

View original: http://arxiv.org/abs/1305.6475