6533b86efe1ef96bd12cbd91
RESEARCH PRODUCT
Radiative axion inflation
Andrea Caputosubject
QuarkNuclear and High Energy PhysicsParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)FOS: Physical sciences01 natural sciencessymbols.namesakeGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesRadiative transferPlanck010306 general physicsAxionInflation (cosmology)Physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyInflatonlcsh:QC1-999High Energy Physics - PhenomenologysymbolsStrong CP problemScalar fieldlcsh:PhysicsAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
Planck data robustly exclude the simple $\lambda\phi^4$ scenario for inflation. This is also the case for models of Axion Inflation in which the inflaton field is the radial part of the Peccei-Quinn complex scalar field. In this letter we show that for the KSVZ model it is possible to match the data taking into account radiative corrections to the tree level potential. After writing down the 1-loop Coleman-Weinberg potential, we show that a radiative plateau is easily generated thanks to the fact that the heavy quarks are charged under $SU(3)_c$ in order to solve the strong CP problem. We also give a numerical example for which the inflationary observables are computed and the heavy quarks are predicted to have a mass $m_Q \gtrsim 10^3TeV$.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-10-01 | Physics Letters |