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

  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={Physical Review D},
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… Expand

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