Contractions of sigma models and integration of massive modes
High Energy Physics - Theory
2007-05-23 v1
Abstract
We show how the integration of massive modes after a spontaneous symmetry breaking in a sigma model can often be interpreted as a contraction, induced by a group contraction, of the target space of the sigma model.
Cite
@article{arxiv.hep-th/0511232,
title = {Contractions of sigma models and integration of massive modes},
author = {M. A. Lledo and O. Macia},
journal= {arXiv preprint arXiv:hep-th/0511232},
year = {2007}
}
Comments
9 pages. Prepared for the porceedings of the 4-th International Symposium Quantum Theory and Symmetries. Varna, Bulgaria, 15-21 August 2005