Strong friction limit in quantum mechanics: the Quantum Smoluchowski equation

Details Strong friction limit in quantum mechanics: the Quantum Smoluchowski equation Strong friction limit in quantum mechanics: the Quantum Smoluchowski equation

2001-07-12

arxiv.org/abs/cond-mat/0107261v2

Phys. Rev. Lett. 87, 086802 (2001)

Physics

Condensed Matter

Statistical Mechanics

4 pages, PRL in press

Scientific paper

10.1103/PhysRevLett.87.086802

For a quantum system coupled to a heat bath environment the strong friction
limit is studied starting from the exact path integral formulation.
Generalizing the classical Smoluchowski limit to low temperatures a time
evolution equation for the position distribution is derived and the strong role
of quantum fluctuations in this limit is revealed.

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