6533b86dfe1ef96bd12c97b7
RESEARCH PRODUCT
Gravity triggered neutrino condensates
Gabriela Barenboimsubject
PhysicsAstrofísicaNuclear and High Energy PhysicsParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Spontaneous symmetry breakingHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísicaGravitationHigh Energy Physics - PhenomenologyExplicit symmetry breakingMAJORANASeesaw mechanismHigh Energy Physics - Phenomenology (hep-ph)Seesaw molecular geometryNeutrinoAstrophysics - Cosmology and Nongalactic AstrophysicsLeptondescription
In this work we use the Schwinger-Dyson equations to study the possibility that an enhanced gravitational attraction triggers the formation of a right-handed neutrino condensate, inducing dynamical symmetry breaking and generating a Majorana mass for the right-handed neutrino at a scale appropriate for the seesaw mechanism. The composite field formed by the condensate phase could drive an early epoch of inflation. We find that to the lowest order, the theory does not allow dynamical symmetry breaking. Nevertheless, thanks to the large number of matter fields in the model, the suppression by additional powers in G of higher order terms can be compensated, boosting them up to their lowest order counterparts. This way chiral symmetry can be broken dynamically and the infrared mass generated turns out to be in the expected range for a successful seesaw scenario.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-11-24 |