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Consistent cosmic microwave background spectra from quantum depletion
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Number of Authors: 3
2015 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, no 9, 002Article in journal (Refereed) Published
Abstract [en]

Following a new quantum cosmological model proposed by Dvali and Gomez, we quantitatively investigate possible modifications to the Hubble parameter and following corrections to the cosmic microwave background spectrum. In this model, scalar and tensor perturbations are generated by the quantum depletion of the background inflaton and graviton condensate respectively. We show how the inflaton mass affects the power spectra and the tensor-to-scalar ratio. Masses approaching the Planck scale would lead to strong deviations, while standard spectra are recovered for an inflaton mass much smaller than the Planck mass.

Place, publisher, year, edition, pages
2015. no 9, 002
Keyword [en]
quantum cosmology, CMBR theory
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-125041DOI: 10.1088/1475-7516/2015/09/002ISI: 000365690000002OAI: oai:DiVA.org:su-125041DiVA: diva2:891564
Available from: 2016-01-07 Created: 2016-01-07 Last updated: 2016-01-07Bibliographically approved

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Kühnel, Florian
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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