Deep factorisation of the stable process II; potentials and applications
Deep factorisation of the stable process II; potentials and applications
复制标题
稳定过程的深度分解II;
DOI:
10.1214/16-aihp806
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Bati Sengul
中科院分区:
文献类型:
--
作者:
A. Kyprianou;V. Rivero;Bati Sengul
Here we propose a different perspective of the deep factorisation in Kyprianou (2015) based on determining potentials. Indeed, we factorise the inverse of the MAP-exponent associated to a stable process via the Lamperti-Kiu transform. Here our factorisation is completely independent from the derivation in Kyprianou (2015) , moreover there is no clear way to invert the factors in Kyprianou (2015) to derive our results. Our method gives direct access to the potential densities of the ascending and descending ladder MAP of the Lamperti-stable MAP in closed form.
In the spirit of the interplay between the classical Wiener-Hopf factorisation and fluctuation theory of the underlying Levy process, our analysis will produce a collection of of new results for stable processes. We give an identity for the point of closest reach to the origin for a stable process with index $\alpha\in (0,1)$ as well as and identity for the point of furthest reach before absorption at the origin for a stable process with index $\alpha\in (1,2)$. Moreover, we show how the deep factorisation allows us to compute explicitly the stationary distribution of stable processes multiplicatively reflected in such a way that it remains in the strip [-1,1].
影响因子:
1.5
作者:
Caballero M
通讯作者:
Caballero M
DOI:
10.48550/arxiv.0812.2506
发表时间:
2008
期刊:
--
影响因子:
--
作者:
Chaumont L
通讯作者:
Chaumont L