Speaker
Lukasz Dulny
(Faculty of Physics, University of Warsaw, Poland)
Description
Equations of motion in slow roll inflationary models with two scalar fields for scalar perturbations metrics were analysed for an example of turning valley in scalar potential with non-canonical kinetic term. The impact of the multi-scale dynamics on the sub-horizon evolution of the perturbations was studied with a special emphasis on the (lack of) decoupling of the large scale modes and features of the background evolution. Potential consequences for the interpretation of the Planck data were discussed.
