UV freeze-in in Starobinsky inflation

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dc.contributor.author Bernal, Nicolas
dc.contributor.author Rubio, Javier
dc.contributor.author Veermäe, Hardi
dc.date.accessioned 2021-10-07T22:42:38Z
dc.date.available 2021-12-18T03:45:50Z
dc.date.issued 2020-10
dc.identifier.citation Bernal , N , Rubio , J & Veermäe , H 2020 , ' UV freeze-in in Starobinsky inflation ' , Journal of Cosmology and Astroparticle Physics , no. 10 , 021 . https://doi.org/10.1088/1475-7516/2020/10/021
dc.identifier.other PURE: 157099459
dc.identifier.other PURE UUID: 1a8c09ba-9158-46be-8c00-f9fae5ce5506
dc.identifier.other WOS: 000590148200023
dc.identifier.uri http://hdl.handle.net/10138/335061
dc.description.abstract In the Starobinsky model of inflation, the observed dark matter abundance can be produced from the direct decay of the inflaton field only in a very narrow spectrum of closeto-conformal scalar fields and spinors of mass similar to 10(7) GeV. This spectrum can be, however, significantly broadened in the presence of effective non-renormalizable interactions between the dark and the visible sectors. In particular, we show that UV freeze-in can efficiently generate the right dark matter abundance for a large range of masses spanning from the keV to the PeV scale and arbitrary spin, without significantly altering the heating dynamics. We also consider the contribution of effective interactions to the inflaton decay into dark matter. en
dc.format.extent 22
dc.language.iso eng
dc.relation.ispartof Journal of Cosmology and Astroparticle Physics
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject dark matter theory
dc.subject inflation
dc.subject particle physics - cosmology connection
dc.subject physics of the early universe
dc.subject SCALAR-FIELD
dc.subject DARK-MATTER
dc.subject GRAVITY
dc.subject 115 Astronomy, Space science
dc.title UV freeze-in in Starobinsky inflation en
dc.type Article
dc.contributor.organization Helsinki Institute of Physics
dc.contributor.organization Department of Physics
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1088/1475-7516/2020/10/021
dc.relation.issn 1475-7516
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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