Quantum-gravity effects for excited states of inflationary perturbations

Abstract

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.

arXiv comment8 pages, clarifications and references added, published in Physical Review D

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Cited by in corpus (10)

• Unitarity of quantum-gravitational corrections to primordial fluctuations in the Born-Oppenheimer approach
• Power spectrum for perturbations in an inflationary model for a closed universe
• Observations in Quantum Cosmology
• Quantum gravitational corrections to the inflationary power spectra in scalar-tensor theories
• Eternal inflation in light of Wheeler-DeWitt equation
• Beyond semiclassical time
• Mode coupling on a geometrodynamical quantization of an inflationary universe
• Reflected Waves and Quantum Gravity
• Effects of quenching protocols based on parametric oscillators
• Hartle-Hawking's vacuum is full of Vilenkin's universe-antiuniverse pairs