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arXiv 1401.0771cond-mat.stat-mech
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连续非马尔可夫反馈控制下Langevin过程的熵产生和涨落定理

Entropy production and fluctuation theorems for Langevin processes under continuous non-Markovian feedback control

T. Munakata, M. L. Rosinberg

摘要:

朗之万过程的连续反馈控制可能是非马尔可夫的,由于测量和控制动作之间的时滞。我们表明,这需要修改耗散和时间反演之间的基本关系,并包括从反向过程的非因果性质所产生的贡献。然后,我们提出了一个新的定义的量衡量的路径的不可逆性在一个非平衡定态,它也可以被视为依赖于熵的总熵产生。这导致了第二定律的推广,它在长时间限制下具有简单的形式。作为一个例子,我们适用于线性系统的一般方法,这是既分析听话,实验相关。

英文摘要:

Continuous feedback control of Langevin processes may be non-Markovian due to a time lag between the measurement and the control action. We show that this requires to modify the basic relation between dissipation and time-reversal and to include a contribution arising from the non-causal character of the reverse process. We then propose a new definition of the quantity measuring the irreversibility of a path in a nonequilibrium stationary state, which can be also regarded as the trajectory-dependent total entropy production. This leads to an extension of the second law which takes a simple form in the long-time limit. As an illustration, we apply the general approach to linear systems which are both analytically tractable and experimentally relevant.

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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