The energy spectrum of gravitational waves in a loop quantum cosmological model

Abstract

We explore the consequences of loop quantum cosmology (inverse-volume corrections) in the spectrum of the gravitational waves using the method of the Bogoliubov coefficients. These corrections are taken into account at the background level of the theory as well as at the first order in the perturbations theory framework. We show that these corrections lead to an intense graviton production during the loop super-inflationary phase prior to the standard slow-roll era, which leave their imprints through new features on the energy spectrum of the gravitational waves as would be measured today, including a new maximum on the low frequency end of the spectrum.

8 pages, 4 figures. RevTex4-1 Expanded version. Version accepted in PRD

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Cited by in corpus (6)

• Vacuum and Gravitons of Relic Gravitational Waves, and Regularization of Spectrum and Energy-Momentum Tensor
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• Second-order cosmological perturbations. IV. Produced by scalar-tensor and tensor-tensor couplings during the radiation dominated stage
• Second-order cosmological perturbations produced by scalar-scalar coupling during inflation stage
• Gravitational waves from two scalar fields unifying the dark sector with inflation
• Gravitational waves from warm inflation in the weak dissipative regime