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arXiv 1105.3579cond-mat.stat-mechquant-ph
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“涨落定理”在非马尔可夫开放量子系统中的检验

A test of "fluctuation theorem" in non-Markovian open quantum systems

Tatsuro Kawamoto, Naomichi Hatano

摘要:

利用量子主方程的方法研究了具有非马尔可夫热浴的开放量子系统的涨落定理,并考察了涨落定理中出现的物理量.马尔可夫量子主方程的方法的波动定理是由Esposito和Mukamel [物理评论E { \bf 73},046129(2006)]。我们表明,他们的讨论可以正式推广到一个非马尔可夫热浴的情况下,当局部系统线性连接到高斯热浴与德鲁德形式的频谱分布。通过对非马尔可夫体系自旋玻色子模型的数值模拟,我们发现除了强非平衡瞬态情形外,“细致平衡“条件都能很好地满足,因此我们对“熵产生”定义的推广几乎总是合理的.因此,我们对涨落定理的推广在更广的范围内是有意义的。

英文摘要:

We study fluctuation theorems for open quantum systems with a non-Markovian heat bath using the approach of quantum master equations and examine the physical quantities that appear in those fluctuation theorems. The approach of Markovian quantum master equations to the fluctuation theorems was developed by Esposito and Mukamel [Phys. Rev. E {\bf73}, 046129 (2006)]. We show that their discussion can be formally generalized to the case of a non-Markovian heat bath when the local system is linearly connected to a Gaussian heat bath with the spectrum distribution of the Drude form. We found by numerically simulating the spin-boson model in non-Markovian regime that the "detailed balance" condition is well satisfied except in a strongly non-equilibrium transient situation, and hence our generalization of the definition of the "entropy production" is almost always legitimate. Therefore, our generalization of the fluctuation theorem seems meaningful in wide regions.

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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