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arXiv 2111.09477cond-mat.stat-mech
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非平衡停滞稳态附近的时间对称电流及其涨落响应关系

Time-symmetric current and its fluctuation response relation around nonequilibrium stalling stationary state

Naoto Shiraishi

AI总结:

本文提出由经验测度定义、时间反演对称且系综平均等于平均电流的时间对称电流,证明其在平衡态及电流停滞的非平衡稳态附近满足带符号反转的涨落响应关系,并可用于实验测定裸跃迁速率。

摘要:

我们提出了随机热力学中电流的一种时间对称对应物,命名为时间对称电流。该量由经验测度定义,因此在时间反演下是对称的,而其系综平均可再现平均电流的大小。我们证明,该时间对称电流满足带有符号反转的常规形式涨落响应关系。值得注意的是,只要观测电流停滞,这一涨落响应关系不仅在平衡态附近成立,也在非平衡稳态附近成立。所得关系还可作为一种实验工具,仅通过测量时间积分的经验测度来计算裸跃迁速率的值。

英文摘要:

We propose a time-symmetric counterpart of the current in stochastic thermodynamics named time-symmetric current. This quantity is defined with empirical measures and thus is symmetric under time reversal, while its ensemble average reproduces the amount of average current. We prove that this time-symmetric current satisfies the fluctuation-response relation in the conventional form with sign inversion. Remarkably, this fluctuation-response relation holds not only around equilibrium states but also around nonequilibrium stationary states if observed currents stall. The obtained relation also serves as an experimental tool for calculating the value of a bare transition rate by measuring only time-integrated empirical measures.

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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