Topological Renormalisation of the O(3) Sigma Model
高能物理 - 理论
2007-05-23 v1
摘要
We show that the one-instanton sector moduli-space divergence of the O(3) Sigma Model leads to an unacceptable dependence of Green's functions on the arbitrary way that the field is split into a quantum fluctuation about a classical background. Since the divergence is associated with the degeneration of field configurations to those of the zero-instanton sector this arbitrariness may be cancelled by a `topological counter-term' which we construct.
引用
@article{arxiv.hep-th/9504062,
title = {Topological Renormalisation of the O(3) Sigma Model},
author = {Richard Costambeys and Paul Mansfield},
journal= {arXiv preprint arXiv:hep-th/9504062},
year = {2007}
}
备注
Latex, 22 pages, no figures