English

Regularity of Local times associated to Volterra-L\'evy processes and path-wise regularization of stochastic differential equations

Probability 2021-04-07 v3

Abstract

We investigate the space-time regularity of the local time associated to Volterra-L\'evy processes, including Volterra processes driven by α\alpha-stable processes for α(0,2]\alpha\in(0,2]. We show that the spatial regularity of the local time for Volterra-L\'evy process is PP-a.s. inverse proportionally to the singularity of the associated Volterra kernel. We apply our results to the investigation of path-wise regularizing effects obtained by perturba\Ption of ODEs by a Volterra-L\'evy process which has sufficiently regular local time. Following along the lines of [15], we show existence, uniqueness and differentiablility of the flow associated to such equations.

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Cite

@article{arxiv.2007.01093,
  title  = {Regularity of Local times associated to Volterra-L\'evy processes and path-wise regularization of stochastic differential equations},
  author = {Fabian A. Harang and Chengcheng Ling},
  journal= {arXiv preprint arXiv:2007.01093},
  year   = {2021}
}

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24 pages