Intrinsic small time estimates for distribution densities of Lévy processes
Intrinsic small time estimates for distribution densities of Lévy processes
复制标题
Lévy 过程分布密度的内在小时间估计
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
A. Kulik
中科院分区:
文献类型:
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作者:
V. Knopova;A. Kulik
Abstract. We construct intrinsic on- and off-diagonal upper and lower estimates for the transition probability density of a Lévy process in small time. By intrinsic we mean that such estimates reflect the structure of the characteristic exponent of the process. The technique used in the paper relies on the asymptotic analysis of the inverse Fourier transform of the respective characteristic function. We provide several examples, in particular, with rather irregular Lévy measure, to illustrate our results.