Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum-gravitational effects on gauge-invariant scalar and tensor
  perturbations during inflation: The de Sitter case   We present detailed calculations for quantum-gravitational corrections to the
power spectra of gauge-invariant scalar and tensor perturbations during
inflation. This is done by performing a semiclassical Born-Oppenheimer type of
approximation to the Wheeler-DeWitt equation, from which we obtain a
Schroedinger equation with quantum-gravitational correction terms. As a first
step, we perform our calculation for a de Sitter universe and find that the
correction terms lead to an enhancement of power on the largest scales.

10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex