Order by disorder up to arbitrarily high temperature
Statistical Mechanics
2026-05-18 v2
Abstract
We prove that a class of classical lattice models on () with on-site space and nearest neighbour interaction, exhibits long-range checkerboard order at sufficiently high temperature. The ordering mechanism is purely entropic. The class of models contains the recently introduced model of Han--Huang--Komargodski--Lucas--Popov (arXiv:2503.22789), by which our work is inspired. The proof uses Pirogov--Sinai theory and the key input is a Peierls bound.
Cite
@article{arxiv.2604.28026,
title = {Order by disorder up to arbitrarily high temperature},
author = {Ravish Mehta},
journal= {arXiv preprint arXiv:2604.28026},
year = {2026}
}
Comments
16 pages, 3 figures