A quantum generalization of the thermal viscous friction law

Physics – Condensed Matter – Statistical Mechanics

Scientific paper

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5 pages, 0 figures, submitted to Phys.Rev.Lett. on 09.05.2003

Scientific paper

On the basis of the equivalence of the energy balance deacription at micro- and macro-level we propose a quantum generalization of the viscous friction law for a macroscopic Langevin equation describing thermal fluctuations without the zero point contribution. This equation recovers the classical case in the limit h -> 0. In particular it satisfies the quantum regression theorem and resolves several anomalies appearing in the quantum extension of the fluctuation dissipation theorem.

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