Contractions of sigma models and integration of massive modes

Details Contractions of sigma models and integration of massive modes Contractions of sigma models and integration of massive modes

2005-11-23

arxiv.org/abs/hep-th/0511232v1

Physics

High Energy Physics

High Energy Physics - Theory

9 pages. Prepared for the porceedings of the 4-th International Symposium Quantum Theory and Symmetries. Varna, Bulgaria, 15-2

Scientific paper

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.

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