Scaling limit and ageing for branching random walk in Pareto environment
Scaling limit and ageing for branching random walk in Pareto environment
复制标题
帕累托环境中分支随机游走的尺度限制和老化
DOI:
10.1214/17-aihp839
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Matthew I. Roberts
中科院分区:
文献类型:
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作者:
Marcel Ortgiese;Matthew I. Roberts
We consider a branching random walk on the lattice, where the branching rates are given by an i.i.d. Pareto random potential. We show that the system of particles, rescaled in an appropriate way, converges in distribution to a scaling limit that is interesting in its own right. We describe the limit object as a growing collection of "lilypads" built on a Poisson point process in $\mathbb{R}^d$. As an application of our main theorem, we show that the maximizer of the system displays the ageing property.