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arXiv 2003.08100cond-mat.stat-mech
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化学反应网络中一级相变熵流涨落的指数体积依赖性

Exponential volume dependence of entropy-current fluctuations at first-order phase transitions in chemical reaction networks

Basile Nguyen, Udo Seifert

摘要:

在化学反应网络中,双稳态只能在远离平衡的地方发生。它与一阶相变有关,其中控制参数是热力学力。在临界点,熵产生对于热力学力是不连续的,当系统处于临界点时,熵产生的涨落与体积成指数关系.在相变时,指数前因子是两个固定点之间的有效势垒的高度。我们对Schlögl模型的结果可以推广到任何化学网络。

英文摘要:

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.

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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