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arXiv 2201.00911cond-mat.soft
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临界点附近液/汽界面的结构和标度律

Structure and scaling laws of liquid/vapor interfaces close to the critical point

György Hantal, Pál Jedlovszky, Marcello Sega

摘要:

为了更深入地了解流体界面,有必要确定一个有意义的粗粒化长度,将内在波动与毛细波动分开,因为后者缺乏适当的统计力学定义。在这里,在无监督学习技术的帮助下,我们引入了一种基于流体局部密度的新长度尺度。这个长度尺度遵循一个标度律,在接近临界点时,它比整体相关长度发散得更温和。这允许区分制度的相关和不相关的毛细波从内在波动。

英文摘要:

To reach a deeper understanding of fluid interfaces it is necessary to identify a meaningful coarse-graining length that separates intrinsic fluctuations from capillary ones, given the lack of a proper statistical mechanical definition of the latter. Here, with the help of unsupervised learning techniques, we introduce a new length scale based on the local density of the fluid. This length scale follows a scaling law that diverges more mildly than the bulk correlation length upon approaching the critical point. This allows to distinguish regimes of correlated and uncorrelated capillary waves from that of intrinsic fluctuations.

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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