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arXiv 1904.03499cond-mat.stat-mech
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单向跃迁系统的熵产生

Entropy production in systems with unidirectional transitions

D. M. Busiello, D. Gupta, A. Maritan

摘要:

熵产生是非平衡系统最基本的特征之一。离散状态系统的公式化可以追溯到著名的施纳肯伯格的工作,并且到目前为止,当两个状态之间的每个转换也允许反向转换时,可以进行。然而,一些物理系统可能表现出单向和双向转换的混合,如何正确定义这种情况下的熵产生仍然是一个悬而未决的问题。在这里,我们提出了一个解决方案,这样一个具有挑战性的问题。平均熵产生可以一致地定义,采用映射,保留平均通量,其物理解释提供。我们描述了一类随机系统组成的单向链接形成循环和详细平衡的双向链接,表明它们的行为在一个伪确定性的方式。这种方法被应用到一个系统的时间相关的随机复位。我们的框架是一致的热力学,并导致一些有趣的观察之间的关系的时间箭头和重置事件的平均熵产生。

英文摘要:

The entropy production is one of the most essential features for systems operating out of equilibrium. The formulation for discrete-state systems goes back to the celebrated Schnakenberg's work and hitherto can be carried out when for each transition between two states also the reverse one is allowed. Nevertheless, several physical systems may exhibit a mixture of both unidirectional and bidirectional transitions, and how to properly define the entropy production in this case is still an open question. Here, we present a solution to such a challenging problem. The average entropy production can be consistently defined, employing a mapping that preserves the average fluxes, and its physical interpretation is provided. We describe a class of stochastic systems composed of unidirectional links forming cycles and detailed-balanced bidirectional links, showing that they behave in a pseudo-deterministic fashion. This approach is applied to a system with time-dependent stochastic resetting. Our framework is consistent with thermodynamics and leads to some intriguing observations on the relation between the arrow of time and the average entropy production for resetting events.

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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