Quantum-Gravitational Effects on Primordial Power Spectra in Slow-Roll Inflationary Models
dc.contributor.author | Brizuela Cieza, David | |
dc.contributor.author | Kramer, Manuel | |
dc.date.accessioned | 2019-01-09T16:51:39Z | |
dc.date.available | 2019-01-09T16:51:39Z | |
dc.date.issued | 2018-01-08 | |
dc.identifier.citation | Galaxies 6(1) : (2018) // Article ID 6 | es_ES |
dc.identifier.issn | 2075-4434 | |
dc.identifier.uri | http://hdl.handle.net/10810/30704 | |
dc.description.abstract | We review the computation of the power spectra of inflationary gauge-invariant perturbations in the context of canonical quantum gravity for generic slow-roll models. A semiclassical approximation, based on an expansion in inverse powers of the Planck mass, is applied to the complete Wheeler-DeWitt equation describing a perturbed inflationary universe. This expansion leads to a hierarchy of equations at consecutive orders of the approximation and allows us to write down a corrected Schrodinger equation that encodes information about quantum-gravitational effects. The analytical dependence of the correction to the power spectrum on the wavenumber is obtained. Nonetheless, some numerical work is needed in order to obtain its precise value. Finally, it is shown that the correction turns out to be positive, which leads to an enhancement of the power spectrum especially prominent for large scales. We will also discuss whether this correction leads to a measurable effect in the cosmic microwave background anisotropies. | es_ES |
dc.description.sponsorship | We thank Claus Kiefer for collaboration on the subject under discussion in this proceedings contribution. D. B. is supported by project FIS2014-57956-P of the Spanish Ministry of Economy and Competitiveness and by project IT956-16 of the Basque Government. The research of M. K. was financed by the Polish National Science Center Grant DEC-2012/06/A/ST2/00395. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/FIS2014-57956-P | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | quantum cosmology | es_ES |
dc.subject | slow-roll inflation | es_ES |
dc.subject | cosmic microwave background | es_ES |
dc.title | Quantum-Gravitational Effects on Primordial Power Spectra in Slow-Roll Inflationary Models | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://www.mdpi.com/2075-4434/6/1/6 | es_ES |
dc.identifier.doi | 10.3390/galaxies6010006 | |
dc.departamentoes | Física teórica e historia de la ciencia | es_ES |
dc.departamentoeu | Fisika teorikoa eta zientziaren historia | es_ES |
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Except where otherwise noted, this item's license is described as © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).