Martin boundary of killed random walks on isoradial graphs
Probability
2021-02-08 v2 Mathematical Physics
math.MP
Abstract
We consider killed planar random walks on isoradial graphs. Contrary to the lattice case, isoradial graphs are not translation invariant, do not admit any group structure and are spatially non-homogeneous. Despite these crucial differences, we compute the asymptotics of the Martin kernel, deduce the Martin boundary and show that it is minimal. Similar results on the grid are derived in a celebrated work of Ney and Spitzer.
Cite
@article{arxiv.1912.10410,
title = {Martin boundary of killed random walks on isoradial graphs},
author = {Cédric Boutillier and Kilian Raschel},
journal= {arXiv preprint arXiv:1912.10410},
year = {2021}
}
Comments
With an appendix by Alin Bostan. 25 pages, 7 figures. To appear in Potential Analysis