Speaker
Yoann Launay
(DAMTP, University of Cambridge)
Description
Previous work on Stochastic Inflation in full General Relativity is reviewed and showcased with latest numerical findings. The recipe to obtain the dynamics of a any such nonlinear and nonperturbative theory, when dynamically sourced by classicalised fluctuations of the short modes, is explained and extended to any scalar-tensor action described by the Effective Field Theory of Dark Energy. This is illustrated with a few examples including Gauss-Bonnet, Brans-Dicke, Horndeski theories and beyond. We conclude on the scope of the approach, its limitations and potential applications beyond the realm of inflation.
Author
Yoann Launay
(DAMTP, University of Cambridge)
Co-authors
Gerasimos Rigopoulos
(Newcastle University)
Prof.
Paul Shellard
(DAMTP, University of Cambridge)