Seminarium Kosmologia i Fizyka Cząstek

There is a less studied aspect of cosmological infation - the evolution of the universe afterthe accelerated expansion but before the onset of particle production leading to the radiationdominatedera. In the framework of multi-feld infationary models, I will discuss possible mechanismsof ending accelerated expansion and how the curvature perturbations can evolve thereafter. This talk is partially based on the following references: 1. S. Renaux-Petel, K. Turzyński,On reaching the adiabatic limit in multi-feld infation, JCAP 1506 (2015) arXiv:1405.6195 2. S.Renaux-Petel, K. Turzyński, Geometrical destabilization of heavy scalar felds during infation,arXiv:1510.01281