Curvaton: Perturbations and reheating

Understand

We study chaotic and runaway potential inflationary models in the curvaton scenario.

• In particular, we address the issue of large tensor-to-scalar ratio and red-tilted spectrum in chaotic models and reheating in runaway model in the light of latest Planck results.
• We show that curvaton can easily circumvent these problems and is well applicable to both type of models.
• For chaotic models, the observable non-Gaussianity put strong constraints on the decay epoch of curvaton as well as on its field value around the horizon exit.