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dc.contributor.authorHaro Cases, Jaume
dc.contributor.authorAmorós Torrent, Jaume
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtiques
dc.date.accessioned2019-03-27T07:37:11Z
dc.date.available2019-03-27T07:37:11Z
dc.date.issued2018-03-15
dc.identifier.citationHaro, J.; Amoros, J. Bouncing cosmologies via modified gravity in the ADM formalism: Application to loop quantum cosmology. "Physical review D", 15 Març 2018, vol. 97, núm. 6, p. 064014-1-064014-15.
dc.identifier.issn2470-0010
dc.identifier.urihttp://hdl.handle.net/2117/130899
dc.description.abstractWe consider the Arnowitt-Deser-Misner formalism as a tool to build bouncing cosmologies. In this approach, the foliation of the spacetime has to be fixed in order to go beyond general relativity modifying the gravitational sector. Once a preferred slicing, which we choose based on the matter content of the Universe following the spirit of Weyl’s postulate, has been fixed, f theories depending on the extrinsic and intrinsic curvature of the slicing are covariant for all the reference frames preserving the foliation; i.e., the constraint and dynamical equations have the same form for all these observers. Moreover, choosing multivalued f functions, bouncing backgrounds emerge in a natural way. In fact, the simplest is the one corresponding to holonomy corrected loop quantum cosmology. The final goal of this work is to provide the equations of perturbations which, unlike the full equations, become gauge invariant in this theory, and apply them to the so-called matter bounce scenario.
dc.language.isoeng
dc.publisherAmerican Physical Society (APS)
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.lcshCosmology
dc.subject.lcshRelativity (Physics)
dc.titleBouncing cosmologies via modified gravity in the ADM formalism: Application to loop quantum cosmology
dc.typeArticle
dc.subject.lemacCosmologia
dc.subject.lemacRelativitat (Física)
dc.contributor.groupUniversitat Politècnica de Catalunya. EDP - Equacions en Derivades Parcials i Aplicacions
dc.contributor.groupUniversitat Politècnica de Catalunya. GEOMVAP - Geometria de Varietats i Aplicacions
dc.identifier.doi10.1103/PhysRevD.97.064014
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.97.064014
dc.rights.accessOpen Access
drac.iddocument22317419
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorHaro, J.; Amoros, J.
upcommons.citation.publishedtrue
upcommons.citation.publicationNamePhysical review D
upcommons.citation.volume97
upcommons.citation.number6
upcommons.citation.startingPage064014-1
upcommons.citation.endingPage064014-15


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