Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology

5 figs.

Detalles Bibliográficos
Autores: Elizaga Navascués, Beatriz, Mena Marugán, Guillermo A.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/259409
Acceso en línea:http://hdl.handle.net/10261/259409
Access Level:acceso abierto
Palabra clave:Loop quantum cosmology
Vacuum state
Cosmological perturbations
Primordial power spectrum
Short-lived inflation
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spelling Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum CosmologyElizaga Navascués, BeatrizMena Marugán, Guillermo A.Loop quantum cosmologyVacuum stateCosmological perturbationsPrimordial power spectrumShort-lived inflation5 figs.This work is an analytical study of the main differences between classical inflationary effects of a fast-roll regime and imprints of hybrid Loop Quantum Cosmology (LQC) on the primordial power spectrum. Effective LQC solutions of phenomenological interest typically contain a classical period of kinetic dominance prior to slow-roll inflation, with consequences on the power spectrum that here we try and tell apart from those of phenomena occuring in the vicinity of a bounce in hybrid LQC. For this comparison, we use the same criterion for the choice of a vacuum state of the primordial perturbations, both in the context of relativistic cosmology and on the LQC cosmological background. As a first approximation to the problem, our study ignores the influence of a quasi-de Sitter evolution (rather than de Sitter) in the slow-roll inflationary regime, and of a typically short transition between the kinetically dominated era and the slow-roll period. Our results show that, while the two studied types of effects can lead to a drastic power suppression in the infrared sector of the spectrum, the mode scale at which this happens is much larger for LQC than for classical relativistic cosmology, the corresponding scales being related to the spacetime curvature at the bounce and at the onset of inflation, respectively.This work was partially supported by Project. No. MICINN FIS2017-86497-C2-2-P and Project. No. MICINN PID2020-118159GB-C41 from Spain. B.E.N. acknowledges financial support from the Standard program of JSPS Postdoctoral Fellowships for Research in Japan.Institute of Physics PublishingMinisterio de Ciencia, Innovación y Universidades (España)Japan Society for the Promotion of ScienceConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220212022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/259409reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICIU//FIS2017-86497-C2-2-Pinfo:eu-repo/grantAgreement/MICIU//MICINN PID2020-118159GB-C41http://dx.doi.org/10.1088/1475-7516/2021/09/030Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2594092026-05-22T06:33:51Z
dc.title.none.fl_str_mv Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
title Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
spellingShingle Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
Elizaga Navascués, Beatriz
Loop quantum cosmology
Vacuum state
Cosmological perturbations
Primordial power spectrum
Short-lived inflation
title_short Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
title_full Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
title_fullStr Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
title_full_unstemmed Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
title_sort Analytical investigation of pre-inflationary effects in the primordial power spectrum: From General Relativity to hybrid Loop Quantum Cosmology
dc.creator.none.fl_str_mv Elizaga Navascués, Beatriz
Mena Marugán, Guillermo A.
author Elizaga Navascués, Beatriz
author_facet Elizaga Navascués, Beatriz
Mena Marugán, Guillermo A.
author_role author
author2 Mena Marugán, Guillermo A.
author2_role author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Japan Society for the Promotion of Science
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Loop quantum cosmology
Vacuum state
Cosmological perturbations
Primordial power spectrum
Short-lived inflation
topic Loop quantum cosmology
Vacuum state
Cosmological perturbations
Primordial power spectrum
Short-lived inflation
description 5 figs.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/259409
url http://hdl.handle.net/10261/259409
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICIU//FIS2017-86497-C2-2-P
info:eu-repo/grantAgreement/MICIU//MICINN PID2020-118159GB-C41
http://dx.doi.org/10.1088/1475-7516/2021/09/030
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Physics Publishing
publisher.none.fl_str_mv Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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