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arXiv 1702.07259math.PR
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谱负Lévy过程一般下降时的出口问题

Exit problems for general draw-down times of spectrally negative Lévy processes

Bo Li, Nhat Linh Vu, Xiaowen Zhou

摘要:

对于谱负Lévy过程,我们证明了几个波动的结果,涉及一个一般的下拉时间,这是一个向下退出时间从一个动态水平,取决于运行的最大值的过程。特别是,我们发现表达式的拉普拉斯变换的双边出口问题,涉及的下拉时间。我们还发现了拉普拉斯变换的首中时和爬行时间超过运行最大相关的下拉水平,分别,并获得一个表达式的下拉相关的潜在措施。所得结果用谱负Lévy过程的标度函数表示。

英文摘要:

For spectrally negative Lévy processes, we prove several fluctuation results involving a general draw-down time, which is a downward exit time from a dynamic level that depends on the running maximum of the process. In particular, we find expressions of the Laplace transforms for the two-sided exit problems involving the draw-down time. We also find the Laplace transforms for the hitting time and creeping time over the running-maximum related draw-down level, respectively, and obtain an expression for a draw-down associated potential measure. The results are expressed in terms of scale functions for the spectrally negative Lévy processes.

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