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dc.contributor.authorAmorós Torrent, Jaume
dc.contributor.authorDe Haro, Jaume
dc.contributor.authorOdintsov, Sergei D.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtica Aplicada I
dc.date.accessioned2014-07-15T11:00:50Z
dc.date.available2014-07-15T11:00:50Z
dc.date.created2014-05-06
dc.date.issued2014-05-06
dc.identifier.citationAmoros, J.; De Haro, J.; Odintsov, S. R+aR2 loop quantum cosmology. "Physical Review D - Particles, Fields, Gravitation and Cosmology", 06 Maig 2014, vol. 89, núm. 10, p. 1-12.
dc.identifier.issn1550-2368
dc.identifier.urihttp://hdl.handle.net/2117/23514
dc.description.abstractWorking in Einstein frame, we introduce, in order to avoid singularities, holonomy corrections to the f(R)=R+aR2 model. We perform a detailed analytical and numerical study when holonomy corrections are taken into account in both Jordan and Einstein frames, obtaining, in Jordan frame, a dynamics which differs qualitatively, at early times, from the one of the original model. More precisely, when holonomy corrections are taken into account, the Universe is not singular, starting at early times in the contracting phase and bouncing to enter the expanding one where, as in the original model, it inflates. This dynamics is completely different from the one obtained in the original R+aR2 model, where the Universe is singular at early times and never bounces. Moreover, we show that these holonomy corrections may lead to better predictions for the inflationary phase as compared with current observations.
dc.format.extent12 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística
dc.subject.lcshQuantum gravity
dc.subject.lcshCosmology--Mathematical models.
dc.titleR+aR2 loop quantum cosmology
dc.typeArticle
dc.subject.lemacCosmologia
dc.contributor.groupUniversitat Politècnica de Catalunya. EGSA - Equacions Diferencials, Geometria, Sistemes Dinàmics i de Control, i Aplicacions
dc.identifier.doi10.1103/PhysRevD.89.104010
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.104010
dc.rights.accessOpen Access
drac.iddocument14924729
dc.description.versionPostprint (published version)
upcommons.citation.authorAmoros, J.; De Haro, J.; Odintsov, S.
upcommons.citation.publishedtrue
upcommons.citation.publicationNamePhysical Review D - Particles, Fields, Gravitation and Cosmology
upcommons.citation.volume89
upcommons.citation.number10
upcommons.citation.startingPage1
upcommons.citation.endingPage12


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