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dc.contributor.authorHaro Cases, Jaume
dc.contributor.authorCai, Yi-Fu
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtiques
dc.date.accessioned2015-12-09T11:30:04Z
dc.date.available2016-08-02T00:30:26Z
dc.date.issued2015-08-01
dc.identifier.citationHaro, J., Cai, Y. An extended matter bounce scenario: current status and challenges. "General relativity and gravitation", 01 Agost 2015, vol. 47, núm. 8.
dc.identifier.issn0001-7701
dc.identifier.urihttp://hdl.handle.net/2117/80300
dc.description.abstractAs an alternative to the paradigm of slow roll inflation, we propose an extended scenario of the matter bounce cosmology in which the Universe has experienced a quasi-matter contracting phase with a variable background equation of state parameter. This extended matter bounce scenario can be realized by considering a single scalar field evolving along an approximately exponential potential. Our result reveals that the rolling of the scalar field in general leads to a running behavior on the spectral index of primordial cosmological perturbations and a negative running can be realized in this model. We constrain the corresponding parameter space by using the newly released Planck data. To apply this scenario, we revisit bouncing cosmologies within the context of modified gravity theories, in particular, the holonomy corrected loop quantum cosmology and teleparallel F(T) gravity. A gravitational process of reheating is presented in such a matter bounce scenario to demonstrate the condition of satisfying current observations. We also comment on several unresolved issues that often appear in matter bounce models.
dc.language.isoeng
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.lcshGravity
dc.subject.otherMatter bounce scenario
dc.subject.otherLoop quantum cosmology
dc.subject.otherTeleparallelism
dc.subject.otherSlow roll inflation
dc.subject.otherd-term inflation
dc.subject.otherparticle creation
dc.subject.othercosmological perturbations
dc.subject.otherexpanding universes
dc.subject.otherdark energy
dc.subject.otheraccelerating universe
dc.subject.othergeneralized gravity
dc.subject.otherquantized fields
dc.subject.otherscalar-field
dc.subject.otherconstraints
dc.titleAn extended matter bounce scenario: current status and challenges
dc.typeArticle
dc.subject.lemacCosmologia
dc.subject.lemacGravetat -- Mètodes matemàtics
dc.identifier.doi10.1007/s10714-015-1936-y
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://link.springer.com/article/10.1007%2Fs10714-015-1936-y
dc.rights.accessOpen Access
local.identifier.drac16843497
dc.description.versionPostprint (author's final draft)
local.citation.authorHaro, J.; Cai, Y.
local.citation.publicationNameGeneral relativity and gravitation
local.citation.volume47
local.citation.number8


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Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain