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arXiv 1408.5941cond-mat.stat-mech
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电流和初始平衡系综的瞬态涨落定理

Transient fluctuation theorems for the currents and initial equilibrium ensembles

Matteo Polettini, Massimiliano Esposito

摘要:

本文证明了具有平稳速率的连续时间马尔可夫跳跃过程的电流的瞬态涨落定理,推广了Andrieux和Gaspard [J. Stat. 127,107(2007)]到有限时间。其结果是基于周期电流和一组额外的潮流,其特征在于瞬态松弛制度的图论分解。然后,可以通过优选合适的初始平衡系综来去除潮汐项,这一结果为最近在[Phys. Rev. E 89,052119(2014)]中提出的没有系综量的波动定理提供了一般理论。作为一个例子,我们研究了一个简单的随机化学发动机的反应网络,最后我们偏离了更复杂的化学反应网络的波动关系的一般性质。

英文摘要:

We prove a transient fluctuation theorem for the currents for continuous-time Markov jump processes with stationary rates, generalizing an asymptotic result by Andrieux and Gaspard [J. Stat. Phys. 127, 107 (2007)] to finite times. The result is based on a graph theoretical decomposition in cycle currents and an additional set of tidal currents that characterize the transient relaxation regime. The tidal term can then be removed by a preferred choice of a suitable initial equilibrium ensemble, a result that provides the general theory for the fluctuation theorem without ensemble quantities recently addressed in [Phys. Rev. E 89, 052119 (2014)]. As an example we study the reaction network of a simple stochastic chemical engine, and finally we digress on general properties of fluctuation relations for more complex chemical reaction networks.

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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