Mini-Instantons
高能物理 - 理论
2007-05-23 v1
摘要
It is shown that the inhomogeneous saddle points of scale invariant theories make the semiclassical expansion sensitive on the choice of non-renormalizable operators. In particular, the instanton fugacity and the beta function of the two dimensional non-linear sigma model depends on apparently non-renormalizable operators. This represents a non-perturbative breakdown of that concept of universality which is based on low dimensional operators.
引用
@article{arxiv.hep-th/9401079,
title = {Mini-Instantons},
author = {Vincenzo Branchina and Janos Polonyi},
journal= {arXiv preprint arXiv:hep-th/9401079},
year = {2007}
}
备注
25 pg. LPT-93-3