Oppenheim, Irwin; Romero-Rochin, Victor - In: Physica A: Statistical Mechanics and its Applications 147 (1987) 1, pp. 184-202
Techniques for deriving the equations of motion for a heavy particle immersed in a bath of light particles have been developed for quantum systems as long as the temperature is not too low. To lowest order we obtain a Langevin equation for the momentum of the heavy particle and a Fokker-Planck...