Remarks on the chemical Fokker-Planck and Langevin equations: Nonphysical currents at equilibrium

被引：19

作者：

Ceccato, Alessandro ^{[1
]}

Frezzato, Diego ^{[1
]}

机构：

[1] Univ Padua, Dept Chem Sci, Via Marzolo 1, I-35131 Padua, Italy

来源：

JOURNAL OF CHEMICAL PHYSICS | 2018年 / 148卷 / 06期

关键词：

STOCHASTIC SIMULATION; KINETICS; SYSTEMS;

D O I：

10.1063/1.5016158

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The chemical Langevin equation and the associated chemical Fokker-Planck equation are wellknown continuous approximations of the discrete stochastic evolution of reaction networks. In this work, we show that these approximations suffer from a physical inconsistency, namely, the presence of nonphysical probability currents at the thermal equilibrium even for closed and fully detailedbalanced kinetic schemes. An illustration is given for a model case. Published by AIP Publishing.

引用

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