Ordered random walks with heavy tails
Probability
2011-03-24 v1
Abstract
This note continues paper of Denisov and Wachtel (2010), where we have constructed a -dimensional random walk conditioned to stay in the Weyl chamber of type . The construction was done under the assumption that the original random walk has moments. In this note we continue the study of killed random walks in the Weyl chamber, and assume that the tail of increments is regularly varying of index . It appears that the asymptotic behaviour of random walks is different in this case. We determine the asymptotic behaviour of the exit time, and, using thisinformation, construct a conditioned process which lives on a partial compactification of the Weyl chamber.
Cite
@article{arxiv.1103.4529,
title = {Ordered random walks with heavy tails},
author = {Denis Denisov and Vitali Wachtel},
journal= {arXiv preprint arXiv:1103.4529},
year = {2011}
}
Comments
20 pages