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The brownian motion on aff(R) and quasi-local theorems

  • National Research University
  • Université d'Evry Val d'Essonne
  • University of North Carolina at Charlotte

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

1 Citation (Scopus)

Abstract

This paper is concerned with Random walk approximations of the Brownian motion on the Affine group Aff(R). We are in particular interested in the case where the innovations are discrete. In this framework, the return probabilities of the walk have fractional exponential decay in large time, as opposed to the polynomial one of the continuous object. We prove that integrating those return probabilities on a suitable neighborhood of the origin, the expected polynomial decay is restored. This is what we call a Quasi-local theorem.

Original languageEnglish
Title of host publicationContemporary Mathematics
PublisherAmerican Mathematical Society
Pages97-124
Number of pages28
DOIs
Publication statusPublished - 1 Jan 2019
Externally publishedYes

Publication series

NameContemporary Mathematics
Volume739
ISSN (Print)0271-4132
ISSN (Electronic)1098-3627

Keywords

  • Affine group
  • Heat-kernel bounds
  • Local and quasi local limit theorems
  • Random walks and Brownian motion

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