Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hamiltonian cosmological perturbation theory with loop quantum gravity
  corrections   Cosmological perturbation equations are derived systematically in a canonical
scheme based on Ashtekar variables. A comparison with the covariant derivation
and various subtleties in the calculation and choice of gauges are pointed out.
Nevertheless, the treatment is more systematic when correction terms of
canonical quantum gravity are to be included. This is done throughout the paper
for one characteristic modification expected from loop quantum gravity.

11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol