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Reversibility of the non-backtracking random walk

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Abstract

Let G be a connected graph of uniformly bounded degree. A k non-backtracking random walk (k-NBRW) (Xn)n=0 on G evolves according to the following rule: Given $ (X_n)_{n =0}^{s}$, at time s+1 the walk picks at random some edge which is incident to Xs that was not crossed in the last k steps and moves to its other end-point. If no such edge exists then it makes a simple random walk step. Assume that for some R>0 every ball of radius R in G contains a simple cycle of length at least k. We show that under some "nice" random time change the k-NBRW becomes reversible. This is used to prove that it is recurrent iff the simple random walk is.

Description

Keywords

math.PR, math.PR, 60J10

Journal Title

Annales de l’Institut Henri Poincaré

Conference Name

Journal ISSN

0246-0203

Volume Title

55

Publisher

Elsevier Masson

Rights

All rights reserved
Sponsorship
EPSRC grant EP/L018896/1.