Existence of multi-dimensional infinite volume self-organized critical forest-fire models

被引:0
作者
Duerre, Maximilian [1 ]
机构
[1] Univ Munich, Inst Math, D-80333 Munich, Germany
来源
ELECTRONIC JOURNAL OF PROBABILITY | 2006年 / 11卷
关键词
forest-fires; self-organized criticality; forest-fire model; existence; well-defined;
D O I
暂无
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
Consider the following forest-fire model where the possible locations of trees are the sites of a cubic lattice. Each site has two possible states: 'vacant' or 'occupied'. Vacant sites become occupied according to independent rate 1 Poisson processes. Independently, at each site ignition (by lightning) occurs according to independent rate lambda Poisson processes. When a site is ignited, its occupied cluster becomes vacant instantaneously. If the lattice is one-dimensional or finite, then with probability one, at each time the state of a given site only depends on finitely many Poisson events; a process with the above description can be constructed in a standard way. If the lattice is infinite and multi-dimensional, in principle, the state of a given site can be influenced by infinitely many Poisson events in finite time. For all positive lambda, the existence of a multi-dimensional infinite volume forest-fire process with parameter lambda is proven.
引用
收藏
页码:513 / 539
页数:27
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