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.

8 pages, clarifications and references added, published in Physical Review D

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Cited by in corpus (3)

• Unitarity of quantum-gravitational corrections to primordial fluctuations in the Born-Oppenheimer approach
• Beyond semiclassical time
• Hartle-Hawking's vacuum is full of Vilenkin's universe-antiuniverse pairs