Large deviations for transient random walks in random environment on a Galton–Watson tree
Large deviations for transient random walks in random environment on a Galton–Watson tree
复制标题
高尔顿-沃森树上随机环境中瞬态随机游走的大偏差
DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
Elie Aidékon
中科院分区:
文献类型:
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作者:
Elie Aidékon
Consider a random walk in random environment on a supercritical Galton--Watson tree, and let $ au_n$ be the hitting time of generation $n$. The paper presents a large deviation principle for $ au_n/n$, both in quenched and annealed cases. Then we investigate the subexponential situation, revealing a polynomial regime similar to the one encountered in one dimension. The paper heavily relies on estimates on the tail distribution of the first regeneration time.