The Wilson exact renormalization group equation and the anomalous dimension parameter
High Energy Physics - Theory
2013-07-09 v3
Abstract
The non-linear way the anomalous dimension parameter has been introduced in the historic first version of the exact renormalization group equation is compared to current practice. A simple expression for the exactly marginal redundant operator proceeds from this non-linearity, whereas in the linear case, first order differential equations must be solved to get it. The role of this operator in the construction of the flow equation is highlighted.
Cite
@article{arxiv.1304.4131,
title = {The Wilson exact renormalization group equation and the anomalous dimension parameter},
author = {C. Bervillier},
journal= {arXiv preprint arXiv:1304.4131},
year = {2013}
}
Comments
10 pages