When does the chaos in the Curie-Weiss model stop to propagate?
Abstract
We investigate increasing propagation of chaos for the mean-field Ising model of ferromagnetism (also known as the Curie-Weiss model) with spins at inverse temperature and subject to an external magnetic field of strength . Using a different proof technique than in [Ben Arous, Zeitouni; 1999] we confirm the well-known propagation of chaos phenomenon: If as , then the 'th marginal distribution of the Gibbs measure converges to a product measure at or and to a mixture of two product measures, if and . More importantly, we also show that if , this property is lost and we identify a non-zero limit of the total variation distance between the number of positive spins among any -tuple and the corresponding binomial distribution.
Keywords
Cite
@article{arxiv.2307.05335,
title = {When does the chaos in the Curie-Weiss model stop to propagate?},
author = {Jonas Jalowy and Zakhar Kabluchko and Matthias Löwe and Alexander Marynych},
journal= {arXiv preprint arXiv:2307.05335},
year = {2023}
}
Comments
18 pages, comments welcome!