Alessandro Podo (Columbia U.) “Nonlinear dynamics in the early universe”
Title: Nonlinear dynamics in the early universe Abstract: The ability to connect early universe dynamics, e.g. inflation, and late universe observations relies on a feature of cosmological adiabatic modes: they are conserved on scales larger than the Hubble horizon. This property is easy to understand at linear order, but its nonlinear validity is more obscure. […]