Energy dissipation and fluctuation response for particles in fluids.
An equality was recently proved relating energy dissipation to the difference of the response and velocity correlation functions for a class of Langevin equations. We generalize this for the physically important case of particles in a fluid, where bath fluctuations are nonlocal in time due to hydrodynamic modes. We also show that the inclusion of a mass term does not alter the result and provide a simple physical interpretation of the original equality.
Deutsch
J M
JM
Department of Physics, University of California, Santa Cruz, CA 95064, USA.
Narayan
Onuttom
O