Université Paul Sabatier
We will focus on recent results in the field of random walks in random environments.The aim of this field is to study the long time behavior of a particle moving in random landscape.
One aspect of random walks in random environments that has attracted a lot of attention in recent years is to understand models in which we observe trapping phenomena. In those models, small pockets in the random landscape have a big impact on the behavior of the walk. This translates into a host of anomalous results for the long time behavior of the walk.
Biased random walks on random graphs is a natural model to observe trapping. Our main focus will be to present results on biased random walks on random trees (Galton-Watson trees) and in a random labyrinth (percolation cluster).
Date : Mardi le 7 janvier 2014
Heure : 11h30 à 12h30
Lieu : Pavillon André-Aisenstadt
Salle : 5340