2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35312We present a new group field theory model, generalising the Boulatov model, which incorporates both 3-dimensional gravity and matter coupled to gravity. We show that the Feynman diagram amplitudes of this model are given by Riemannian quantum gravity spin foam amplitudes coupled to a scalar matter field. We briefly discuss the features of this model and its possible generalisations.11 pages, no figures, references addedGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext