Random walk on barely supercritical branching random walk
Random walk on barely supercritical branching random walk
复制标题
勉强超临界分支随机游走的随机游走
DOI:
10.1007/s00440-019-00942-0
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发表时间:
--
影响因子:
2
通讯作者:
J. Nagel
中科院分区:
文献类型:
--
作者:
R. van der Hofstad;T. Hulshof;J. Nagel
Letbe a supercritical Galton–Watson tree with a bounded offspring distribution that has mean, conditioned to survive. Letbe a random embedding ofintoaccording to a simple random walk step distribution. Letbe percolation onwith parameterp, and letbe the critical percolation parameter. We consider a random walkonand investigate the behavior of the embedded processasand simultaneously,becomes critical, that is,. We show that when we scale time byand space by, the processconverges to ad-dimensional Brownian motion. We argue that this scaling can be seen as an interpolation between the scaling of random walk on a static random tree and the anomalous scaling of processes in critical random environments.
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