Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A group field theory for 3d quantum gravity coupled to a scalar field   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.

32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics