22066 articles – 15901 Notices  [english version]
HAL : hal-00321069, version 2

Fiche détaillée  Récupérer au format
Versions disponibles :
Limit law of the local time for Brox's diffusion
Pierre Andreoletti 1, Roland Diel 1
(02/07/2009)

We consider Brox's model: a one-dimensional diffusion in a Brownian environment. We show the weak convergence of the normalized local time process $(L(x+m_{\log t},t)/t,x\in I \subset \R)$, centered at the coordinate of the bottom of the deepest valley $m_{\log t}$ reached by the process before time $t$ to a functional of two independent 3-dimensional Bessel processes. We apply that result to get the limit law of the supremum of the normalized local time. These results are discussed and compared to the discrete time and space analogous model whose same questions have been solved recently by N. Ganter, Y. Peres and Z. Shi.
1 :  Mathématiques - Analyse, Probabilités, Modélisation - Orléans (MAPMO)
Université d'Orléans – CNRS : UMR7349
Mathématiques/Probabilités
Diffusion process in random environment – local time
Liste des fichiers attachés à ce document : 
PDF
article.pdf(301.9 KB)
PS
article.ps(331 KB)