arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2010.07697cond-mat.stat-mech
收藏

从Hamilton系统的随机运动到BoltzmannH定理和热力学第二定律--一条由路径概率引出的途径

From Random Motion of Hamiltonian Systems to Boltzmann H Theorem and Second Law of Thermodynamics -- a Pathway by Path Probability

Qiuping A. Wang, Aziz El Kaabouchi

摘要:

对粒子在保守力和高斯噪声作用下的理想随机运动的数值实验表明,路径概率与作用量呈指数关系。这种分布意味着一个基本原则推广的最小作用量原理的哈密顿-拉格朗日力学,并产生一个扩展的形式主义的随机动力学力学。在这个理论中,相密度分布守恒的刘维尔定理必须被修改,以允许相密度的时间演化,从而玻尔兹曼H定理。我们认为,在对H定理的批评中,没有考虑到正则牛顿动力学与随机动力学之间的差距。

英文摘要:

A numerical experiment of ideal stochastic motion of a particle subject to conservative forces and Gaussian noise reveals that the path probability depends exponentially on action. This distribution implies a fundamental principle generalizing the least action principle of the Hamiltonian-Lagrangian mechanics and yields an extended formalism of mechanics for random dynamics. Within this theory, Liouville theorem of conservation of phase density distribution must be modified to allow time evolution of phase density and consequently the Boltzmann H theorem. We argue that the gap between the regular Newtonian dynamics and the random dynamics was not considered in the criticisms of the H theorem.

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。

↑