Perturbation theory and renormalisation group equations
High Energy Physics - Theory
2009-11-07 v3 High Energy Physics - Phenomenology
Abstract
We discuss the perturbative expansion of several one-loop improved renormalisation group equations. It is shown that in general the integrated renormalisation group flows fail to reproduce perturbation theory beyond one loop.
Cite
@article{arxiv.hep-th/0111191,
title = {Perturbation theory and renormalisation group equations},
author = {Daniel F. Litim and Jan M. Pawlowski},
journal= {arXiv preprint arXiv:hep-th/0111191},
year = {2009}
}
Comments
5 pages, 1 figure, revtex, typos corrected, eq. (19) added, discussion extended, to appear in PRD