Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Challenges in recovering a consistent cosmology from the effective
  dynamics of loop quantum gravity   We reexamine a set of existing procedures aimed at recovering the effective
description of the dynamics of LQG in the context of cosmological solutions. In
particular, the studies of those methods, to which the choice of cuboidal
graphs and graph-preserving Hamiltonian is central, result in the formulation
of a set of no-go statements, severely limiting the possibility of recovering a
physically consistent effective dynamics this way.

29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ