2019/03/31 by David Brizuela, Claus Kiefer, Manuel Kraemer +1 · 1 citation
Physics and Astronomy · #gr-qc #astro-ph.CO #hep-th
paper · pdf · doi:10.1103/physrevd.99.104007
published as Phys. Rev. D 99, 104007 (2019) · 8 pages, clarifications and references added, published in Physical Review D
arxiv created 2019/05/07 · arxiv updated 2019/05/08
We generalize former findings regarding quantum-gravitational corrections arising from a canonical quantization of a perturbed FLRW universe during inflation by considering an initial state for the scalar and tensor perturbations that generalizes the adiabatic vacuum state and allows us to consider the scenario that the perturbation modes start their evolution in an excited state. Our result shows that the quantum-gravitationally corrected power spectra get modified by pre-factors including the excitation numbers.