Finite-size effects in a sandpile.
Finite-size effects in a sandpile.
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沙堆中的有限尺寸效应。
DOI：
10.1103/physreva.43.7091
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
S. Nagel
中科院分区：
文献类型：
--
作者：
Chu;H. Jaeger;S. Nagel
我们研究沙堆的大小如何影响其表面发生雪崩的性质。我们提出了一个简单的解释，为什么，如果一个桩是足够小的，雪崩的分布变化从什么是在大型系统中观察到的，并给出了一个标准如何小的桩必须为了使这种情况发生。这种解释并不支持雪崩表现出自组织临界行为的结论。我们还提出的数据表明，雪崩在非常狭窄的沙堆中的分布是定性相同的那些发现在大桩。
We examine how the size of a sandpile can affect the nature of the avalanches occurring on its surface. We propose a simple explantion for why, if a pile is made sufficiently small, the distribution of avalanches changes from what is observed in large systems and give a criterion for how small the pile must be in order for this to happen. This explanation does not support the conclusion that avalanches show self-organized critical behavior. We also present data which indicate that the distributions of avalanches in very narrow sandpiles are qualitatively the same as those found in large piles.