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arXiv 1902.04857cond-mat.stat-mech
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热弛豫过程不可逆性的信息论界

Information-theoretical bound of the irreversibility in thermal relaxation processes

Naoto Shiraishi, Keiji Saito

摘要:

我们建立的熵产生,这是至关重要的热力学不可逆性的表征,是通过一个变分原理涉及Kulback-Leibler分歧。这种表示的一个简单的应用程序导致在热弛豫过程中的熵产生的信息理论界,这是一个比传统的热力学第二定律更强的不等式。这个界限也被解释为一个热弛豫过程中的信息几何方面的可能路径上的约束。我们的研究结果揭示了一个隐藏的普遍规律固有的一般热弛豫过程。

英文摘要:

We establish that entropy production, which is crucial to the characterization of thermodynamic irreversibility, is obtained through a variational principle involving the Kulback-Leibler divergence. A simple application of this representation leads to an information-theoretical bound on entropy production in thermal relaxation processes; this is a stronger inequality than the conventional second law of thermodynamics. This bound is also interpreted as a constraint on the possible path of a thermal relaxation process in terms of information geometry. Our results reveal a hidden universal law inherent to general thermal relaxation processes.

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