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arXiv 0707.3153cond-mat.stat-mech
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非线性Fokker-Planck方程H-定理的推论

Consequences of the H-Theorem from Nonlinear Fokker-Planck Equations

Veit Schwammle, Fernando D. Nobre, Evaldo M. F. Curado

摘要:

通过引入广义跃迁率,从主方程直接导出了一般类型的非线性Fokker-Planck方程。H-定理证明的系统,遵循这些类的非线性Fokker-Planck方程,在存在一个外部的潜力。为此,提出了一种涉及福克-普朗克方程和一般熵形式的关系。结果表明,在平衡状态下,这种关系相当于最大熵原理。Fokker-Planck方程族可能与单一类型的熵有关,因此,探索了众所周知的熵形式与其相关的Fokker-Planck方程之间的对应关系。结果表明,Boltzmann-Gibbs熵除了与标准的线性Fokker-Planck方程有关外,还可能与一类非线性Fokker-Planck方程有关。

英文摘要:

A general type of nonlinear Fokker-Planck equation is derived directly from a master equation, by introducing generalized transition rates. The H-theorem is demonstrated for systems that follow those classes of nonlinear Fokker-Planck equations, in the presence of an external potential. For that, a relation involving terms of Fokker-Planck equations and general entropic forms is proposed. It is shown that, at equilibrium, this relation is equivalent to the maximum-entropy principle. Families of Fokker-Planck equations may be related to a single type of entropy, and so, the correspondence between well-known entropic forms and their associated Fokker-Planck equations is explored. It is shown that the Boltzmann-Gibbs entropy, apart from its connection with the standard -- linear Fokker-Planck equation -- may be also related to a family of nonlinear Fokker-Planck equations.

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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