A Perturbative Improvement of the Hierarchical Approximation
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.
- Publication:
-
arXiv e-prints
- Pub Date:
- July 1993
- DOI:
- arXiv:
- arXiv:hep-th/9307128
- Bibcode:
- 1993hep.th....7128M
- Keywords:
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- High Energy Physics - Lattice;
- High Energy Physics - Theory
- E-Print:
- 11 p., uses phyzzx.tex , UIowa 12-93