Conservation laws and work fluctuation relations in chemical reaction networks
Conservation laws and work fluctuation relations in chemical reaction networks
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DOI：
10.1063/1.5042253
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发表时间：
2018-12-28
影响因子：
4.4
通讯作者：
Esposito, Massimiliano
中科院分区：
文献类型：
--
作者：
Rao, Riccardo;Esposito, Massimiliano
我们制定了一个非平衡热力学描述的开放化学反应网络（CRN）的化学主方程。CRN的拓扑性质和它的守恒律被证明发挥了至关重要的作用。它们被用来分解成一个潜在的变化和两个工作的贡献，第一个是由于外部控制恒化器浓度的时间依赖性变化，第二个是由于整个系统的非保守力保持流动的熵产生。这两个作品共同满足Jarzynski和Crooks波动定理。在没有功的情况下，当系统松弛到平衡时，系统的势能被动力学最小化，其平衡值符合最大熵原理。一个广义的朗道原理也成立：产生一个非平衡态所需的最小功是该态相对于在没有任何功的情况下达到的平衡值的相对熵。(C)2018年作者。
We formulate a nonequilibrium thermodynamic description for open chemical reaction networks (CRNs) described by a chemical master equation. The topological properties of the CRN and its conservation laws are shown to play a crucial role. They are used to decompose the entropy production into a potential change and two work contributions, the first due to time dependent changes in the externally controlled chemostats concentrations and the second due to flows maintained across the system by nonconservative forces. These two works jointly satisfy a Jarzynski and Crooks fluctuation theorem. In the absence of work, the potential is minimized by the dynamics as the system relaxes to equilibrium and its equilibrium value coincides with the maximum entropy principle. A generalized Landauer's principle also holds: the minimal work needed to create a nonequilibrium state is the relative entropy of that state to its equilibrium value reached in the absence of any work. (C) 2018 Author(s).