English

Attraction time for strongly reinforced walks

Probability 2016-09-07 v3

Abstract

We consider a class of strongly edge-reinforced random walks, where the corresponding reinforcement weight function is nondecreasing. It is known, from Limic and Tarr\`{e}s [Ann. Probab. (2007), to appear], that the attracting edge emerges with probability 1 whenever the underlying graph is locally bounded. We study the asymptotic behavior of the tail distribution of the (random) time of attraction. In particular, we obtain exact (up to a multiplicative constant) asymptotics if the underlying graph has two edges. Next, we show some extensions in the setting of finite graphs, and infinite graphs with bounded degree. As a corollary, we obtain the fact that if the reinforcement weight has the form w(k)=kρw(k)=k^{\rho}, ρ>1\rho>1, then (universally over finite graphs) the expected time to attraction is infinite if and only if ρ1+1+52\rho\leq1+\frac{1+\sqrt{5}}{2}.

Keywords

Cite

@article{arxiv.math/0612048,
  title  = {Attraction time for strongly reinforced walks},
  author = {Codina Cotar and Vlada Limic},
  journal= {arXiv preprint arXiv:math/0612048},
  year   = {2016}
}

Comments

Published in at http://dx.doi.org/10.1214/08-AAP564 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)

R2 v1 2026-07-22T17:47:18.237Z