Fancy and facts in the (d - 2) expansion of non-linear sigma models
Statistical Mechanics
2008-02-03 v1
Abstract
We review the existing results on the scaling dimensions of operators with more than two derivatives in the non-linear sigma models. We argue that the speculations on the relevance of these operators, and correspondingly on the breakdown of the expansion for the classical Heisenberg model, or for the one-parameter scaling theory of localization, are based on a dubious mathematical analysis.
Keywords
Cite
@article{arxiv.cond-mat/9612016,
title = {Fancy and facts in the (d - 2) expansion of non-linear sigma models},
author = {E. Brezin and S. Hikami},
journal= {arXiv preprint arXiv:cond-mat/9612016},
year = {2008}
}
Comments
9 pages, latex