Abstract
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.
Original language | English |
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Article number | 123528 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 78 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2 Dec 2008 |