Preheating in Palatini Higgs inflation

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dc.contributor University of Helsinki, Helsinki Institute of Physics en
dc.contributor University of Helsinki, Department of Physics en Rubio Pena, Javier Tomberg, Eemeli S. 2020-05-20T11:14:01Z 2020-05-20T11:14:01Z 2019-04-12
dc.identifier.citation Rubio Pena , J & Tomberg , E S 2019 , ' Preheating in Palatini Higgs inflation ' , Journal of Cosmology and Astroparticle Physics , vol. 2019 , no. 4 , 021 . en
dc.identifier.issn 1475-7516
dc.identifier.other PURE: 124705979
dc.identifier.other PURE UUID: fefffb5d-0246-4291-9d50-38d4877a1729
dc.identifier.other ArXiv:
dc.identifier.other ORCID: /0000-0002-6158-747X/work/58741606
dc.identifier.other WOS: 000516629500001
dc.description.abstract We study the details of preheating in Palatini Higgs inflation. We show, that contrary to what happens in the metric formulation of the model, the Universe does not reheat through the creation of gauge bosons only, but also through the tachyonic production of Higgs excitations. The latest entropy production channel turns out to be very efficient and leads to an almost instantaneous onset of radiation domination after the end of inflation. As compared to the metric case, this reduces the number of e-folds needed to solve the usual hot big bang problems while leading to a smaller spectral index for the primordial spectrum of density perturbations. en
dc.format.extent 23
dc.language.iso eng
dc.relation.ispartof Journal of Cosmology and Astroparticle Physics
dc.rights en
dc.subject hep-ph en
dc.subject astro-ph.CO en
dc.subject gr-qc en
dc.subject 114 Physical sciences en
dc.title Preheating in Palatini Higgs inflation en
dc.type Article
dc.description.version Peer reviewed
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/acceptedVersion

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