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
Title: | UV freeze-in in Starobinsky inflation |
Author: | Bernal, Nicolas; Rubio, Javier; Veermäe, Hardi |
Contributor organization: | Helsinki Institute of Physics Department of Physics |
Date: | 2020-10 |
Language: | eng |
Number of pages: | 22 |
Belongs to series: | Journal of Cosmology and Astroparticle Physics |
ISSN: | 1475-7516 |
DOI: | https://doi.org/10.1088/1475-7516/2020/10/021 |
URI: | http://hdl.handle.net/10138/335061 |
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. |
Subject: |
dark matter theory
inflation particle physics - cosmology connection physics of the early universe SCALAR-FIELD DARK-MATTER GRAVITY 115 Astronomy, Space science |
Peer reviewed: | Yes |
Usage restriction: | openAccess |
Self-archived version: | acceptedVersion |
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