6533b831fe1ef96bd1299098

RESEARCH PRODUCT

Spiral Inflation

Gabriela BarenboimWan-il Park

subject

PhysicsInflation (cosmology)Nuclear and High Energy PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Field (physics)Scalar (mathematics)FOS: Physical sciencesFísicaObservableAstrophysics::Cosmology and Extragalactic AstrophysicsInflatonlcsh:QC1-999High Energy Physics - PhenomenologyTheoretical physicssymbols.namesakeGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenology (hep-ph)symbolsTensorSymmetry breakingPlancklcsh:PhysicsAstrophysics - Cosmology and Nongalactic Astrophysics

description

We propose a novel scenario of primordial inflation in which the inflaton goes through a spiral motion starting from around the top of a symmetry breaking potential. We show that, even though inflation takes place for a field value much smaller than Planck scale, it is possible to obtain relatively large tensor to scalar ratio ($r \sim 0.1$) without fine tuning. The inflationary observables perfectly match Planck data.

yearjournalcountryeditionlanguage
2015-02-01
10.1016/j.physletb.2014.12.042https://doi.org/10.1016/j.physletb.2014.12.042