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arXiv 1109.0935cond-mat.stat-mechcond-mat.mtrl-scicond-mat.soft
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圆盘填料中Voronoi体积的相关性

Correlation between Voronoi volumes in disc packings

Song-Chuan Zhao, Stacy Sidle, Harry L. Swinney, Matthias Schröter

摘要:

我们测量的两点相关的自由Voronoi体积的二元圆盘填料,其中的包装分数$ϕ_{\rm avg}$范围从0.8175到0.8380。我们观察到$ϕ_{\rm avg}$的整个范围内的短程相关性和$ϕ_{\rm avg}>0.8277$的反相关性。反相关的空间范围随着$ϕ_{\rm avg}$而增加,而反相关的最大值的位置和正相关的范围随着$ϕ_{\rm avg}$而缩小。我们推测,在这个系统中,反关联的开始对应于非相干开始。

英文摘要:

We measure the two-point correlation of free Voronoi volumes in binary disc packings, where the packing fraction $ϕ_{\rm avg}$ ranges from 0.8175 to 0.8380. We observe short-ranged correlations over the whole range of $ϕ_{\rm avg}$ and anti-correlations for $ϕ_{\rm avg}>0.8277$. The spatial extent of the anti-correlation increases with $ϕ_{\rm avg}$ while the position of the maximum of the anti-correlation and the extent of the positive correlation shrink with $ϕ_{\rm avg}$. We conjecture that the onset of anti-correlation corresponds to dilatancy onset in this system.

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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