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arXiv 0902.1858cond-mat.stat-mech
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强阻尼极限下的量子涨落定理

Quantum fluctuation theorems in the strong damping limit

Sebastian Deffner, Michael Brunner, Eric Lutz

摘要:

我们考虑一个驱动的量子粒子在强摩擦制度所描述的量子Smoluchowski方程。我们推导出Crooks和Jarzynski型关系的约化量子系统适当推广的熵产生考虑到非吉布斯字符的平衡分布。在非平衡稳态的情况下,我们得到一个量子版本的Hatano-Sasa关系。此外,我们提出了一个实验与驱动约瑟夫森结,将允许调查非平衡熵波动过阻尼量子系统。

英文摘要:

We consider a driven quantum particle in the strong friction regime described by the quantum Smoluchowski equation. We derive Crooks and Jarzynski type relations for the reduced quantum system by properly generalizing the entropy production to take into account the non-Gibbsian character of the equilibrium distribution. In the case of a nonequilibrium steady state, we obtain a quantum version of the Hatano-Sasa relation. We, further, propose an experiment with driven Josephson junctions that would allow to investigate nonequilibrium entropy fluctuations in overdamped quantum systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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