The pressure of active particles

  • Stefano Steffenoni (MPI MiS, Leipzig)
A3 01 (Sophus-Lie room)


For equilibrium systems pressure has been demonstrated to have a microscopic origin related to momentum of the particles. Through kinetic theory and statistical mechanics a link among macroscopic and microscopic world has been derived. When we leave the particular case of equilibrium a general theory does not exist yet and different nonequilibrium issue can lead to different results. In this talk I will focus on active particles, i.e. particles capable of converting (internal or environmental) energy into directed motion. Through this supply of energy due to internal degrees of freedom entails a non-conservation of mechanical energy and non-elasticity of interaction among particles, assumed condition on kinetic theory for derivation of the pressure on a wall. Therefore, we expect that pressure exerted by active particles could present new and stimulating features, due to the nonequilibrium nature of the microscopic model.

Katja Heid

MPI for Mathematics in the Sciences Contact via Mail

Upcoming Events of this Seminar