{ "id": "2409.07744", "version": "v1", "published": "2024-09-12T04:34:08.000Z", "updated": "2024-09-12T04:34:08.000Z", "title": "A numerical study of the zeroes of the grand partition function of hard needles of length $k$ on stripes of width $k$", "authors": [ "Soumyadeep Sarma" ], "comment": "12 pages, 13 figures", "categories": [ "cond-mat.stat-mech" ], "abstract": "We numerically study zeroes of the partition function for trimers ($k = 3$) on $3 \\times L$ strip. While such results for dimers ($k = 2$) on 2D lattices are well known to always lie on the negative real axis and are unbounded, here we see that the zeroes are bounded on branches in a finite-sized region and with a considerable number of them being complex. We analyze this result further to numerically study the density of zeroes on such branches, estimating the critical power-law exponents, and make interesting observations on density of filled sites in the lattice as a function of activity $z$.", "revisions": [ { "version": "v1", "updated": "2024-09-12T04:34:08.000Z" } ], "analyses": { "keywords": [ "grand partition function", "hard needles", "numerical study", "2d lattices", "numerically study zeroes" ], "note": { "typesetting": "TeX", "pages": 12, "language": "en", "license": "arXiv", "status": "editable" } } }