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arXiv 1111.2703cond-mat.stat-mechphysics.comp-ph
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晶格上的Bohman-Frieze-Wormald模型,产生不连续的渗流转变

Bohman-Frieze-Wormald model on the lattice, yielding a discontinuous percolation transition

K. J. Schrenk, A. Felder, S. Deflorin, N. A. M. Araújo, R. M. D'Souza, H. J. Herrmann

摘要:

BFW模型由Bohman、Frieze和Wormald [Random Struct. Algorithms,25,432(2004)]引入,并且最近由Chen和D 'Souza [Phys. Rev. Lett.,106,115701(2011)],在正方形和简单立方晶格上进行了研究。在二维和三维,我们发现了一个强烈的不连续过渡的数值证据。在两个维度上,阈值处的团簇是紧凑的,具有分形维数为$d_f=1.49\pm0.02$的分形表面。在简单立方晶格上,观察到最大团簇尺寸的明显跳跃。我们继续分析该模型的树状版本,其中只有合并债券被采样,维度为2到7。在任何考虑的维度上,过渡也是不连续的。最后,还研究了阈值处的团簇大小分布对空间维数的依赖性。

英文摘要:

The BFW model introduced by Bohman, Frieze, and Wormald [Random Struct. Algorithms, 25, 432 (2004)] and recently investigated in the framework of discontinuous percolation by Chen and D'Souza [Phys. Rev. Lett., 106, 115701 (2011)], is studied on the square and simple-cubic lattices. In two and three dimensions, we find numerical evidence for a strongly discontinuous transition. In two dimensions, the clusters at the threshold are compact with a fractal surface of fractal dimension $d_f=1.49\pm0.02$. On the simple-cubic lattice, distinct jumps in the size of the largest cluster are observed. We proceed to analyze the tree-like version of the model, where only merging bonds are sampled, for dimension two to seven. The transition is again discontinuous in any considered dimension. Finally, the dependence of the cluster-size distribution at the threshold on the spatial dimension is also investigated.

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