English

A deterministic walk on the randomly oriented Manhattan lattice

Probability 2019-04-30 v1

Abstract

Consider a randomly-oriented two dimensional Manhattan lattice where each horizontal line and each vertical line is assigned, once and for all, a random direction by flipping independent and identically distributed coins. A deterministic walk is then started at the origin and at each step moves diagonally to the nearest vertex in the direction of the horizontal and vertical lines of the present location. This definition can be generalized, in a natural way, to larger dimensions, but we mainly focus on the two dimensional case. In this context the process localizes on two vertices at all large times, almost surely. We also provide estimates for the tail of the length of paths, when the walk is defined on the two dimensional lattice. In particular, the probability of the path to be larger than nn decays sub-exponentially in nn. It is easy to show that higher dimensional paths may not localize on two vertices but will still eventually become periodic, and are therefore bounded.

Keywords

Cite

@article{arxiv.1904.12751,
  title  = {A deterministic walk on the randomly oriented Manhattan lattice},
  author = {Andrea Collevecchio and Kais Hamza and Laurent Tournier},
  journal= {arXiv preprint arXiv:1904.12751},
  year   = {2019}
}

Comments

18 pages, 12 figures

R2 v1 2026-06-23T08:52:24.953Z