在拓上不可逆转的马尔科夫链上准静止时间不对称
Luis Armando Corona1, R Salgado-García2
1Instituto de Física, Universidad Autónoma de San Luis Potosí, Av. Parque Chapultepec 1570, Privadas del Pedregal, 78295 San Luis Potosí, S.L.P., Mexico.
Chaos (Woodbury, N.Y.)
|October 22, 2025
概括
这项研究引入了一种新的方法来测量不可逆系统中的时间不对称性. 准静止不可逆性指数量化了在传统产量未定义的系统中的时间不可逆性.
科学领域:
- 统计力学 统计力学
- 信息理论 信息理论
- 计算生物学 计算生物学
背景情况:
- 由于结构限制,许多自然过程在时间上是不可逆转的.
- 对于这些系统来说,不可逆转性的传统措施,如生产率,是未定义的.
- 在拓上不可逆转的马尔科夫链对量化时间不对称性提出了特殊的挑战.
研究的目的:
- 开发一种用于评估内在时间不可逆转系统中的时间不对称性的新方法.
- 引入一个新的指标,准静止不可逆性指数,作为生产率的类比.
- 为了证明这种方法对理论模型和生物数据的适用性.
主要方法:
- 专注于拓上不可逆转的马尔科夫链.
- 在轨迹的"可逆内部"上构建一个有条件的马尔科夫链.
- 使用前进和反向路径分布之间的库尔巴克-莱布勒分歧来定义准静止不可逆向性指数.
主要成果:
- 拟议的方法为产量未定义的系统提供了明确的不可逆性衡量标准.
- 对于一个简单的马尔科夫链模型的分析计算验证了这一方法.
- 该方法已成功应用于来自Hominidae物种的线粒体DNA序列.
结论:
- 准静止不可逆转性指数提供了一个可靠的时间不对称性衡量,在本质上不可逆转的系统.
- 这种方法将不可逆性的量化扩展到更广泛的动态过程类别.
- 这项研究强调了这种方法在分析复杂的生物系统中的实用性.
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