Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Foliation-based approach to quantum gravity and applications to
  astrophysics   The recently proposed Holography-inspired approach to quantum gravity is
reviewed and expanded. The approach is based on the foliation of the background
spacetime and reduction of the offshell states to the physical states. Careful
attention is paid to the boundary conditions. It is noted that the outstanding
problems such as the cosmological constant problem and black hole information
can be tackled from the common thread of the quantized gravity. One-loop
renormalization of the coupling constants and the beta function analysis are
illustrated. Active galactic nuclei and gravitational waves are discussed as
the potential applications of the present quantization scheme to astrophysics.

37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga