Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Renormalization of symmetry restricted spin foam models with curvature
  in the asymptotic regime   We study the renormalization group flow of the Euclidean
Engle-Pereira-Rovelli-Livine and Freidel-Krasnov (EPRL-FK) spin foam model in
the large-$j$-limit. The vertex amplitude is deformed to include a cosmological
constant term. The state sum is reduced to describe a foliated spacetime whose
spatial slices are flat, isotropic and homogeneous. The model admits a
non-vanishing extrinsic curvature whereas the scale factor can expand or
contract at successive time steps.
  The reduction of degrees of freedom allows a numerical evaluation of certain
geometric observables on coarser and finer discretizations. Their comparison
defines the renormalization group (RG) flow of the model in the parameters
$(\alpha,\Lambda,G)$. We first consider the projection of the RG flow along the
$\alpha$ direction, which shows a UV-attractive fixed point. Then, we extend
our analysis to two- and three-dimensional parameter spaces. Most notably, we
find the indications of a fixed point in the $(\alpha,\Lambda,G)$ space showing
one repulsive and two attractive directions.

13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org