A Perturbative Improvement of the Hierarchical Approximation
High Energy Physics - Theory
2007-05-23 v1 High Energy Physics - Lattice
Abstract
We propose a perturbative improvement of the hierarchical approximation for gaussian models. The procedure is based on a relabeling of the momenta which allows one to express the symmetries of the hierarchical model using a simple multiplication group. The representations of this group are used to expand the action. The perturbative expansion is treated as a problem of symmetry breaking using Ward identity techniques.
Keywords
Cite
@article{arxiv.hep-th/9307128,
title = {A Perturbative Improvement of the Hierarchical Approximation},
author = {Yannick Meurice},
journal= {arXiv preprint arXiv:hep-th/9307128},
year = {2007}
}
Comments
11 p., uses phyzzx.tex , UIowa 12-93