6533b86efe1ef96bd12cc822
RESEARCH PRODUCT
Constant-roll inflation: confrontation with recent observational data
Hayato MotohashiHayato MotohashiAlexei A. StarobinskyAlexei A. Starobinskysubject
High Energy Physics - TheoryClass (set theory)Cosmology and Nongalactic Astrophysics (astro-ph.CO)FOS: Physical sciencesGeneral Physics and AstronomyModel parametersGeneral Relativity and Quantum Cosmology (gr-qc)AstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesGeneral Relativity and Quantum Cosmologysymbols.namesakeTheoretical physicsGeneral Relativity and Quantum Cosmology0103 physical sciencesPlanck010306 general physicsPhysicsInflation (cosmology)010308 nuclear & particles physicsInflatonHigh Energy Physics - Theory (hep-th)symbolsObservational studyConstant (mathematics)Astrophysics - Cosmology and Nongalactic Astrophysicsdescription
The previously proposed class of phenomenological inflationary models in which the assumption of inflaton slow-roll is replaced by the more general, constant-roll condition is compared with the most recent cosmological observational data, mainly the Planck ones. Models in this two-parametric class which remain viable appear to be close to the slow-roll ones, and their inflaton potentials are close to (but still different from) that of the natural inflation model. Permitted regions for the two model parameters are presented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-02-19 |