The range of validity of the semiclassical Smoluchowski equation derived recently by Coffey et al is discussed. The analysis is based on the quantum Smoluchowski equation derived by the present author before. A quantum generalization of the Einstein law of Brownian motion is also obtained.
Stochastic Mechanics and the Unification of Quantum Mechanics with Brownian Motion
Noise perturbations in the Brownian motion and quantum dynamics
QonFusion -- Quantum Approaches to Gaussian Random Variables: Applications in Stable Diffusion and Brownian Motion
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