Exponential volume dependence of entropy-current fluctuations at first-order phase transitions in chemical reaction networks.,Physical Review E

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Exponential volume dependence of entropy-current fluctuations at first-order phase transitions in chemical reaction networks.
Physical Review E ( IF 2.2 ) Pub Date : 2020-08-03 , DOI: 10.1103/physreve.102.022101
Basile Nguyen ₁ , Udo Seifert ₁

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In chemical reaction networks, bistability can only occur far from equilibrium. It is associated with a first-order phase transition where the control parameter is the thermodynamic force. At the bistable point, the entropy production is known to be discontinuous with respect to the thermodynamic force. We show that the fluctuations of the entropy production have an exponential volume-dependence when the system is bistable. At the phase transition, the exponential prefactor is the height of the effective potential barrier between the two fixed-points. Our results obtained for Schlögl's model can be extended to any chemical network.

中文翻译：

化学反应网络中一阶相变时熵电流波动的指数体积相关性。

在化学反应网络中，双稳态只能远未达到平衡。它与一阶相变相关，其中控制参数为热力学力。在双稳态点，已知熵产生相对于热力学力是不连续的。我们证明了当系统是双稳态时，熵产生的波动具有指数的体积依赖性。在相变时，指数前置因子是两个固定点之间有效势垒的高度。我们针对Schlögl模型获得的结果可以扩展到任何化学网络。

更新日期：2020-08-03

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