Orateur
Arthur Poisson
(IAP)
Description
Cosmic inflation is the leading paradigm for describing the initial conditions of cosmological perturbations. The search for the most natural theoretical description is therefore a very important matter. Due to the relevance of quantum effects, this amounts to determining how to formulate quantum field theory in a quasi-de Sitter space-time, where the lack of time-translation invariance renders flat-space methods based on energy inapplicable.
In this talk, I will explore two methods for constructing the Hilbert space of a quantum field theory in exact de-Sitter spacetime, based on its isometry group.
Auteur
Arthur Poisson
(IAP)
