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arXiv 1202.0286cond-mat.stat-mech
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边界驱动系统中的大偏差:数值评估和有效的大尺度行为

Large deviations in boundary-driven systems: Numerical evaluation and effective large-scale behavior

Guy Bunin, Yariv Kafri, Daniel Podolsky

摘要:

我们研究罕见的事件在系统中的扩散场驱动的平衡的边界。我们提出了一种数值技术,并使用它来计算在一个和两个维度的罕见事件的概率。使用这种技术,我们表明,一个缓慢变化的配置的概率密度可以捕获与少量的长波长模式。对于在空间中迅速变化的构型,这种描述可以由局部平衡假设来补充。

英文摘要:

We study rare events in systems of diffusive fields driven out of equilibrium by the boundaries. We present a numerical technique and use it to calculate the probabilities of rare events in one and two dimensions. Using this technique, we show that the probability density of a slowly varying configuration can be captured with a small number of long wave-length modes. For a configuration which varies rapidly in space this description can be complemented by a local equilibrium assumption.

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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