Fluctuation-dissipation relations for steady-state systems

Fluctuation-dissipation relations for steady-state systems
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稳态系统的涨落-耗散关系

DOI:
10.1209/0295-5075/100/20001
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发表时间:
2009-08
期刊:
EPL
影响因子:
1.8
通讯作者:
Ou-Yang, Zhongcan
Ou-Yang, Zhongcan
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Xing, Jianhua;Mu, Weihua;Ou-Yang, Zhongcan

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涨落耗散(FD)定理是热力学平衡附近系统的基本结果。指出非平衡弛豫动力学与平衡态的自发涨落有关。最近,我们已经表明,由随机微分方程描述的耗散系统的动力学可以映射到一个恒温的哈密顿系统,与非平衡稳态的前者对应的平衡状态的后者。在本文中,相应的FD定理推导的方法平行于程序的近平衡FD定理,在此映射的基础上。分析结果与数值计算结果吻合较好。我们发现以前的一些结果是当前关系的特殊情况。我们还建议进一步的研究利用之间的类比一般耗散系统出现在其他科学分支和哈密顿系统。
The fluctuation-dissipation (FD) theorem is a fundamental result for systems near thermodynamic equilibrium. It states that the nonequilibrium relaxation dynamics is related to the spontaneous fluctuation at equilibrium. Recently we have shown that the dynamics of a dissipative system described by stochastic differential equations can be mapped to that of a thermostated Hamiltonian system, with a nonequilibrium steady state of the former corresponding to the equilibrium state of the latter. In present manuscript, the corresponding FD theorem is derived in the way parallel to the procedure for deriving the near equilibrium FD theorem, based on this mapping. The analytical results in the present approach are in good agreement with numerical results. We find some previous results are special cases of the current relations. We also suggest further studies exploiting the analogy between a general dissipative system appearing in other science branches and a Hamiltonian system.
DOI: 10.1007/978-94-017-2438-8
发表时间: 1990-05
期刊: --
影响因子: --
作者:
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