A group field theory for 3d quantum gravity coupled to a scalar field

Details A group field theory for 3d quantum gravity coupled to a scalar field A group field theory for 3d quantum gravity coupled to a scalar field

2005-06-10

arxiv.org/abs/gr-qc/0506067v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, no figures, references added

Scientific paper

We 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.

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