Quantum Brownian motion with large friction.
Quantum Brownian motion in the strong friction limit is studied based on the exact path integral formulation of dissipative systems. In this limit the time-nonlocal reduced dynamics can be cast into an effective equation of motion, the quantum Smoluchowski equation. For strongly condensed phase environments it plays a similar role as master equations in the weak coupling range. Applications for chemical, mesoscopic, and soft matter systems are discussed and reveal the substantial role of quantum fluctuations.
Ankerhold
Joachim
J
Physikalisches Institut, Albert-Ludwigs-Universität, 79104 Freiburg, Germany. ankerhold@physik.uni-freiburg.de
Grabert
Hermann
H
Pechukas
Philip
P
D003198:Computer Simulation; D004058:Diffusion; D004583:Electrons; D017276:Friction; D015233:Models, Statistical; D009010:Monte Carlo Method; D009038:Motion; D010825:Physics / Q000379:methods*; D011789:Quantum Theory; D013696:Temperature; D013997:Time Factors