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Hyperbolic Inflation in the Light of Planck 2015 data

dc.creatorBasilakos, Spyros
dc.creatorBarrow, John David
dc.date.accessioned2018-11-24T23:18:21Z
dc.date.available2015-09-02T11:37:17Z
dc.date.available2018-11-24T23:18:21Z
dc.date.issued2015-05-18
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/250423
dc.identifier.urihttp://repository.aust.edu.ng/xmlui/handle/123456789/3260
dc.description.abstractRubano and Barrow have discussed the emergence of a dark energy, with late-time cosmic acceleration arising from a self-interacting homogeneous scalar field with a potential of hyperbolic power type. Here, we study the evolution of this scalar-field potential back in the inflationary era. Using the hyperbolic power potential in the framework of inflation, we find that the main slow-roll parameters, like the scalar spectral index, the running of the spectral index and the tensor-to-scalar fluctuation ratio can be computed analytically. Finally, in order to test the viability of this hyperbolic scalar-field model at the early stages of the Universe, we compare the predictions of that model with the latest observational data, namely Planck 2015.
dc.languageen
dc.publisherAPS
dc.publisherPhysical Review D
dc.rightshttp://creativecommons.org/licenses/by-nc/2.0/uk/
dc.rightsAttribution-NonCommercial 2.0 UK: England & Wales
dc.subjectCosmology
dc.subjectinflation
dc.titleHyperbolic Inflation in the Light of Planck 2015 data
dc.typeArticle


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