Loop expansion of the average effective action in the functional renormalization group approach
High Energy Physics - Theory
2015-12-24 v3
Abstract
We formulate a perturbation expansion for the effective action in a new approach to the functional renormalization group method based on the concept of composite fields for regulator functions being their most essential ingredients. We demonstrate explicitly the principal difference between the properties of effective actions in these two approaches existing already on the one-loop level in a simple gauge model.
Keywords
Cite
@article{arxiv.1506.04491,
title = {Loop expansion of the average effective action in the functional renormalization group approach},
author = {Peter M. Lavrov and Boris S. Merzlikin},
journal= {arXiv preprint arXiv:1506.04491},
year = {2015}
}
Comments
15 pages; v3: minor corrections, references added