Convexity of the effective action from functional flows
High Energy Physics - Theory
2007-05-23 v1
Abstract
We show that convexity of the effective action follows from its functional flow equation. Our analysis is based on a new, spectral representation. The results are relevant for the study of physical instabilities. We also derive constraints for convexity-preserving regulators within general truncation schemes including proper-time flows, and bounds for infrared anomalous dimensions of propagators.
Keywords
Cite
@article{arxiv.hep-th/0602140,
title = {Convexity of the effective action from functional flows},
author = {Daniel F. Litim and Jan M. Pawlowski and Lautaro Vergara},
journal= {arXiv preprint arXiv:hep-th/0602140},
year = {2007}
}
Comments
4 pages, 3 figures