arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.00582cond-mat.stat-mechmath.PR
收藏

马氏链大偏差的图组合方法

Graph-combinatorial approach for large deviations of Markov chains

Giorgio Carugno, Pierpaolo Vivo, Francesco Coghi

摘要:

考虑离散时间马尔可夫链,研究了对经验占有测度的大偏差,这对于计算纯可加和跳跃型观测量的涨落是有用的。我们提供了一个精确的表达有限时间矩生成函数,这是分裂的周期和路径的贡献,并通过图形组合的方法对经验占领措施的标度累积量生成函数。所得到的表达式使我们能够给出相互作用和熵项,以及拉格朗日乘子的物理解释,并可以作为一个起点,子领先的渐近。我们说明了使用一个简单的两个状态马尔可夫链的方法。

英文摘要:

We consider discrete-time Markov chains and study large deviations of the pair empirical occupation measure, which is useful to compute fluctuations of pure-additive and jump-type observables. We provide an exact expression for the finite-time moment generating function, which is split in cycles and paths contributions, and scaled cumulant generating function of the pair empirical occupation measure via a graph-combinatorial approach. The expression obtained allows us to give a physical interpretation of interaction and entropic terms, and of the Lagrange multipliers, and may serve as a starting point for sub-leading asymptotics. We illustrate the use of the method for a simple two-state Markov chain.

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。

↑