6533b7cefe1ef96bd1257c2c
RESEARCH PRODUCT
Structure formation during an early period of matter domination
Gabriela BarenboimJavier Raserosubject
PhysicsAstronomical ObjectsNuclear and High Energy PhysicsParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Structure formation010308 nuclear & particles physicsDegenerate energy levelsFOS: Physical sciencesFísicaAstrophysics16. Peace & justice01 natural sciencesUpper and lower boundsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesParticle010303 astronomy & astrophysicsPeriod (music)Astrophysics - Cosmology and Nongalactic Astrophysicsdescription
In this work we show that modifying the thermal history of the Universe by including an early period of matter domination can lead to the formation of astronomical objects. However, the survival of these objects can only be possible if the dominating matter decays to a daughter particle which is not only almost degenerate with the parent particle but also has an open annihilation channel. This requirement translates in an upper bound for the coupling of such a channel and makes the early structure formation viable.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-04-23 | Journal of High Energy Physics |