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arXiv 1409.3154math.PR
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Lévy过程首达时的指数矩及相关量

Exponential moments of first passage times and related quantities for Lévy processes

Frank Aurzada, Alexander Iksanov, Matthias Meiners

摘要:

对于实直线上的Lévy过程,给出了其首次通过$(r,\infty)$区间的时间、在区间$(-\infty,r]$中的逗留时间和最后离开$(-\infty,r]$的时间的指数矩的有限性的完全判据.此外,只要这些量是有限的,我们得到它们各自的渐近行为为$r \to \infty$。

英文摘要:

For a Lévy process on the real line, we provide complete criteria for the finiteness of exponential moments of the first passage time into the interval $(r,\infty)$, the sojourn time in the interval $(-\infty,r]$, and the last exit time from $(-\infty,r]$. Moreover, whenever these quantities are finite, we derive their respective asymptotic behavior as $r \to \infty$.

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。

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