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arXiv 1307.1102math-phmath.MP
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非平衡Hamilton统计系统的路径积分形式

A path integral formalism for non-equilibrium Hamiltonian statistical systems

Richard Kleeman

摘要:

基于拟平衡密度流形,提出了非平衡系统的路径积分形式。一个广义玻尔兹曼原理被用来加权流形路径的指数减去一个特定的流形路径相对于完全刘维进化的信息差异。流形成员在特定时间的可能性被称为一致性分布,类似于量子波函数。这里的拉格朗日量是修正的广义Onsager-Machlup形式。对于大的时间和长的慢时标,热力学是厄廷格形式。所提出的路径积分与外电磁场中粒子的量子理论中的路径积分有联系。然而,它完全是一个维纳形式,所以实际计算。最后证明了只要满足一定的合理条件,则存在唯一的稳态一致性分布。

英文摘要:

A path integral formalism for non-equilibrium systems is proposed based on a manifold of quasi-equilibrium densities. A generalized Boltzmann principle is used to weight manifold paths with the exponential of minus the information discrepancy of a particular manifold path with respect to full Liouvillean evolution. The likelihood of a manifold member at a particular time is termed a consistency distribution and is analogous to a quantum wavefunction. The Lagrangian here is of modified generalized Onsager-Machlup form. For large times and long slow timescales the thermodynamics is of Oettinger form. The proposed path integral has connections with those occuring in the quantum theory of a particle in an external electromagnetic field. It is however entirely of a Wiener form and so practical to compute. Finally it is shown that providing certain reasonable conditions are met then there exists a unique steady-state consistency distribution.

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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