Quantum-gravitational effects on gauge-invariant scalar and tensor perturbations during inflation: The de Sitter case
General Relativity and Quantum Cosmology
2016-05-19 v2 High Energy Physics - Theory
Abstract
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.
Keywords
Cite
@article{arxiv.1511.05545,
title = {Quantum-gravitational effects on gauge-invariant scalar and tensor perturbations during inflation: The de Sitter case},
author = {David Brizuela and Claus Kiefer and Manuel Kraemer},
journal= {arXiv preprint arXiv:1511.05545},
year = {2016}
}
Comments
21 pages, 5 figures, clarifications and references added, version accepted for publication in Physical Review D