Energy Dissipation and Fluctuation-Response in Driven Quantum Langevin Dynamics

Details Energy Dissipation and Fluctuation-Response in Driven Quantum Langevin Dynamics Energy Dissipation and Fluctuation-Response in Driven Quantum Langevin Dynamics

2008-04-07

arxiv.org/abs/0804.1070v2

EuroPhys Letters 83 50006 (2008)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 1 figure

Scientific paper

10.1209/0295-5075/83/50006

Energy dissipation in a nonequilibrium steady state is studied in driven quantum Langevin systems. We study energy dissipation flow to thermal environment, and obtain a general formula for the average rate of energy dissipation using an autocorrelation function for the system variable. This leads to a general expression of the equality that connects the violation of the fluctuation-response relation to the rate of energy dissipation, the classical version of which was first studied by Harada and Sasa. We also point out that the expression depends on coupling form between system and reservoir.

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