arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1409.1972math.PR
收藏

双反射布朗运动边界局部时的大偏差

Large deviations for the boundary local time of doubly reflected Brownian Motion

Martin Forde, Rohini Kumar, Hongzhong Zhang

摘要:

我们计算的矩生成函数$\hat{f}(x;λ,α)=\frac{1}λ\mathbb{E}_x(e^{αL_τ})$,其中$L_t$是本地时间为零的标准布朗运动与反射障碍在$0$和$b$,和$τ\sim \mathrm{Exp}(λ)$是独立的$W$的封闭形式的表达式。通过分析$\hat{f}(x;\cdot,α)$在$λ$中如何爆破以及在何处爆破,利用Tauberian结果和Gärtner-Ellis定理建立了$L_t/t$的大时间大偏差原理.

英文摘要:

We compute a closed-form expression for the moment generating function $\hat{f}(x;λ,α)=\frac{1}λ\mathbb{E}_x(e^{αL_τ})$, where $L_t$ is the local time at zero for standard Brownian motion with reflecting barriers at $0$ and $b$, and $τ\sim \mathrm{Exp}(λ)$ is independent of $W$. By analyzing how and where $\hat{f}(x;\cdot,α)$ blows up in $λ$, a large-time large deviation principle (LDP) for $L_t/t$ is established using a Tauberian result and the Gärtner-Ellis Theorem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑