Perturbation theory for O(3) topological charge correlators
High Energy Physics - Lattice
2009-11-11 v2
Abstract
To check the consistency of positivity requirements for the two-point correlation function of the topological charge density, which were identified in a previous paper, we are computing perturbatively this two-point correlation function in the two-dimensional O(3) model. We find that at the one-loop level these requirements are fulfilled.
Cite
@article{arxiv.hep-lat/0505004,
title = {Perturbation theory for O(3) topological charge correlators},
author = {Miguel Aguado and Erhard Seiler},
journal= {arXiv preprint arXiv:hep-lat/0505004},
year = {2009}
}
Comments
v1: 27 pages, 7 figures; v2: 28 pages, 8 figures, matches published version