Effective temperature of active matter.
We follow the dynamics of an ensemble of interacting self-propelled motorized particles in contact with an equilibrated thermal bath. We find that the fluctuation-dissipation relation allows for the definition of an effective temperature that is compatible with the results obtained using a tracer particle as a thermometer. The effective temperature takes a value which is higher than the temperature of the bath, and it is continuously controlled by the motor intensity.
Loi
Davide
D
European Synchrotron Radiation Facility, Boîte Postale 220, F-38043 Grenoble, France.
Mossa
Stefano
S
Cugliandolo
Leticia F
LF