Some cosmological implications of hidden sectors

J. R. Espinosa, T. Konstandin, J. M. No, M. Quirós

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Resum

We discuss some cosmological implications of extensions of the standard model with hidden-sector scalars coupled to the Higgs boson. We put special emphasis on the conformal case, in which the electroweak symmetry is broken radiatively with a Higgs mass above the experimental limit. Our refined analysis of the electroweak phase transition in this kind of models strengthens the prediction of a strongly first-order phase transition as required by electroweak baryogenesis. We further study gravitational wave production and the possibility of low-scale inflation as well as a viable dark matter candidate. © 2008 The American Physical Society.
Idioma originalEnglish
Número d’article123528
RevistaPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volum78
Número12
DOIs
Estat de la publicacióPublicada - 2 de des. 2008

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