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arXiv · 1511.05545

Quantum-gravitational effects on gauge-invariant scalar and tensor perturbations during inflation: The de Sitter case

David Brizuela·Claus Kiefer·Manuel Kraemer
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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.

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David Brizuela, Claus Kiefer, Manuel Kraemer. 2015-11-17. Quantum-gravitational effects on gauge-invariant scalar and tensor perturbations during inflation: The de Sitter case. https://doi.org/10.1103/physrevd.93.104035

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