Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cyclic universe from Loop Quantum Gravity   We discuss how a cyclic model for the flat universe can be constructively
derived from Loop Quantum Gravity. This model has a lower bounce, at small
values of the scale factor, which shares many similarities with that of Loop
Quantum Cosmology. We find that quantum gravity corrections can be also
relevant at energy densities much smaller than the Planckian one and that they
can induce an upper bounce at large values of the scale factor.

16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph