期刊
PHYSICAL REVIEW D
卷 78, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.78.123528
关键词
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资金
- European Commission [MRTN-CT-2004-503369]
- UniverseNet [MRTN-CT-2006-035863]
- Comunidad de Madrid project [P-ESP-00346]
- CICYT, Spain [FPA 2007-60252, FPA 2005-02211]
- EU FP6 Marie Curie Research
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.
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