6533b82ffe1ef96bd12950ba
RESEARCH PRODUCT
A strong electroweak phase transition from the inflaton field
Ville VaskonenVille VaskonenKimmo TuominenKimmo TuominenTommi TenkanenTommi Tenkanensubject
cosmological inflationParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Physics beyond the Standard ModelScalar (mathematics)Degrees of freedom (physics and chemistry)FOS: Physical sciences01 natural sciences7. Clean energyStandard ModelGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsPhysicsInflation (cosmology)010308 nuclear & particles physicsElectroweak interactionHigh Energy Physics::PhenomenologyAstronomy and AstrophysicsInflatonextensions of the Standard ModelHiggs fieldHigh Energy Physics - Phenomenologyelectroweak phase transitionAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
We study a singlet scalar extension of the Standard Model. The singlet scalar is coupled non-minimally to gravity and assumed to drive inflation, and also couple sufficiently strongly with the SM Higgs field in order to provide for a strong first order electroweak phase transition. Requiring the model to describe inflation successfully, be compatible with the LHC data, and yield a strong first order electroweak phase transition, we identify the regions of the parameter space where the model is viable. We also include a singlet fermion with scalar coupling to the singlet scalar to probe the sensitivity of the constraints on additional degrees of freedom and their couplings in the singlet sector. We also comment on the general feasibility of these fields to act as dark matter.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-09-22 |