期刊
JOURNAL OF CHEMICAL PHYSICS
卷 129, 期 15, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.2995855
关键词
-
资金
- NSF [DMS0708331]
- NSFC [10428101]
- Jilin University
We investigate the oscillatory reaction dynamics in a closed isothermal chemical system: the reversible Lotka-Volterra model. The second law of thermodynamics dictates that the system ultimately reaches an equilibrium. Quasistationary oscillations are analyzed while the free energy of the system serves as a global Lyapunov function of the dissipative dynamics. A natural distinction between regions near and far from equilibrium in terms of the free energy can be established. The dynamics is analogous to a nonlinear mechanical system with time-dependent increasing damping. Near equilibrium, no oscillation is possible as dictated by Onsager's reciprocal symmetry relation. We observe that while the free energy decreases in the closed system's dynamics, it does not follow the steepest descending path. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2995855]
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