On the one-sided exit problem for stable processes in random scenery
On the one-sided exit problem for stable processes in random scenery
复制标题
随机场景中稳定过程的单边退出问题
DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
Bruno Schapira
中科院分区:
文献类型:
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作者:
F. Castell;N. Guillotin;F. Pène;Bruno Schapira
We consider the one-sided exit problem for stable Levy process in random scenery, that is the asymptotic behaviour for $T$ large of the probability $$mathbb{P}Big[ sup_{tin[0,T]} Delta_t leq 1Big] $$ where $$Delta_t = int_{mathbb{R}} L_t(x) , dW(x).$$ Here $W=(W(x))_{xinmathbb{R}}$ is a two-sided standard real Brownian motion and $(L_t(x))_{xinmathbb{R},tgeq 0}$ the local time of a stable Levy process with index $alphain (1,2]$, independent from the process $ W$. Our result confirms some physicists prediction by Redner and Majumdar.