Beyond Mean Field: Fluctuation Diagnostics and Fixed-Point Behavior
Nuclear Theory
2026-04-22 v2 Statistical Mechanics
High Energy Physics - Theory
Abstract
We develop theoretical diagnostics for the breakdown of mean-field theory, demonstrate how spatial structure and finite interaction ranges enter the effective description, and show how these scales qualitatively modify the renormalization-group flow.
Cite
@article{arxiv.2602.21095,
title = {Beyond Mean Field: Fluctuation Diagnostics and Fixed-Point Behavior},
author = {Pok Man Lo},
journal= {arXiv preprint arXiv:2602.21095},
year = {2026}
}
Comments
7 pages, 2 figures, new version as appeared in JSPC