Universality and ambiguity in fermionic effective actions
High Energy Physics - Theory
2013-05-30 v1 Mathematical Physics
math.MP
Abstract
We discuss an ambiguity in the one-loop effective action of massive fields which takes place in massive fermionic theories. The universality of logarithmic UV divergences in different space-time dimensions leads to the non-universality of the finite part of effective action, which can be called the non-local multiplicative anomaly. The general criteria of existence of this phenomena are formulated and applied to fermionic operators with different external fields.
Cite
@article{arxiv.1201.2649,
title = {Universality and ambiguity in fermionic effective actions},
author = {Guilherme de Berredo-Peixoto and Dante D. Pereira and Ilya L. Shapiro},
journal= {arXiv preprint arXiv:1201.2649},
year = {2013}
}
Comments
13 pages, no figures