paper

Renormalization of an SU(2) Tensorial Group Field Theory in Three Dimensions

arXiv:1303.6772 · doi:10.1007/s00220-014-1928-x

Abstract

We address in this paper the issue of renormalizability for SU(2) Tensorial Group Field Theories (TGFT) with geometric Boulatov-type conditions in three dimensions. We prove that tensorial interactions up to degree 6 are just renormalizable without any anomaly. Our new models define the renormalizable TGFT version of the Boulatov model and provide therefore a new approach to quantum gravity in three dimensions. Among the many new technical results established in this paper are a general classification of just renormalizable models with gauge invariance condition, and in particular concerning properties of melonic graphs, the second order expansion of melonic two point subgraphs needed for wave-function renormalization.

51 pages, 15 figures, 2 tables. v2: minor corrections. v3: matches published version

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