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dc.contributor.authorBarrow, John D.
dc.contributor.authorKittou, Georgia
dc.date.accessioned2021-02-12T17:30:14Z
dc.date.available2021-02-12T17:30:14Z
dc.date.issued2020-02-13
dc.date.submitted2019-07-16
dc.identifierarxiv: arxiv:1907.06410v1
dc.identifier.issn1434-6044
dc.identifier.others10052-020-7642-2
dc.identifier.other7642
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/317558
dc.descriptionFunder: Science and Technology Facilities Council; doi: http://dx.doi.org/10.13039/501100000271
dc.description.abstractAbstract: We investigate the case of two interacting fluids in homogeneous and isotropic cosmologies with a non-linear interaction term. The interaction term avoids the unrealistic form generally used in the literature, beginning with Tolman, in which the interaction is zero when the Hubble parameter vanishes. A variety of exact solutions for the scale factor are found and describe a range of new behaviors. We also extend the analysis of possible cosmological solutions with interacting fluids when curvature is taken into consideration. We use an example of energy exchange between radiation and scalar field to alleviate the flatness problem.
dc.languageen
dc.publisherSpringer Berlin Heidelberg
dc.rightsAttribution 4.0 International (CC BY 4.0)en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectRegular Article - Theoretical Physics
dc.titleNon-linear interactions in cosmologies with energy exchange
dc.typeArticle
dc.date.updated2021-02-12T17:30:13Z
prism.issueIdentifier2
prism.publicationNameThe European Physical Journal C
prism.volume80
dc.identifier.doi10.17863/CAM.64671
dcterms.dateAccepted2020-01-10
rioxxterms.versionofrecord10.1140/epjc/s10052-020-7642-2
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidKittou, Georgia [0000-0002-1492-0217]
dc.identifier.eissn1434-6052


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's licence is described as Attribution 4.0 International (CC BY 4.0)