Speaker
Dr
Angela Lepidi
(ASC, LMU, Muenchen)
Description
Cosmological perturbations and their possible non-Gaussian features are key observables to understand the evolution of the primordial universe and the involved high energy physics.
After a basic review on the subject, I will present a general formalism that provides a systematic computation of the linear and non-linear perturbations for an arbitrary number of cosmological fluids in the early Universe going through various transitions, in particular the decay of some species. The mixed inflaton-curvaton scenario is presented as an application. More generally, the presented formalism can be used as a toolbox to study systematically the cosmological constraints, arising from linear perturbations and from non-Gaussianities, for particle physics models in the early Universe.
Primary author
Dr
Angela Lepidi
(ASC, LMU, Muenchen)
