{ "id": "1808.09032", "version": "v1", "published": "2018-08-27T20:43:29.000Z", "updated": "2018-08-27T20:43:29.000Z", "title": "An upper bound on the number of self-avoiding polygons via joining", "authors": [ "Alan Hammond" ], "comment": "32 pages and four figures. This article corresponds to Part II of arXiv:1504.05286, a submission giving a unified treatment of three articles", "journal": "Ann. Probab. 46 (2018), no. 1, 175-206", "categories": [ "math.PR", "math.CO" ], "abstract": "For $d \\geq 2$ and $n \\in \\mathbb{N}$ even, let $p_n = p_n(d)$ denote the number of length $n$ self-avoiding polygons in $\\mathbb{Z}^d$ up to translation. The polygon cardinality grows exponentially, and the growth rate $\\lim_{n \\in 2\\mathbb{N}} p_n^{1/n} \\in (0,\\infty)$ is called the connective constant and denoted by $\\mu$. Madras [J. Statist. Phys. 78 (1995) no. 3--4, 681--699] has shown that $p_n \\mu^{-n} \\leq C n^{-1/2}$ in dimension $d=2$. Here we establish that $p_n \\mu^{-n} \\leq n^{-3/2 + o(1)}$ for a set of even $n$ of full density when $d=2$. We also consider a certain variant of self-avoiding walk and argue that, when $d \\geq 3$, an upper bound of $n^{-2 + d^{-1} + o(1)}$ holds on a full density set for the counterpart in this variant model of this normalized polygon cardinality.", "revisions": [ { "version": "v1", "updated": "2018-08-27T20:43:29.000Z" } ], "analyses": { "keywords": [ "upper bound", "self-avoiding polygons", "polygon cardinality grows", "full density set", "variant model" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 32, "language": "en", "license": "arXiv", "status": "editable" } } }