Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-singular cosmology in a model of non-relativistic gravity   We present a model of non-relativistic gravitational theory which is
power-counting renormalizable in 3+1 dimensional spacetime. When applied to
cosmology, the relativity-violation terms lead to a dark radiation component,
which can give rise to a bounce if dark radiation possesses negative energy
density. Additionally, we investigate a cyclic extension of the non-singular
cosmology in which the universe undergoes contractions and expansions
periodically. In both scenarios the background theory is well defined at the
quantum level.

21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
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
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an