Sep 2 – 6, 2019
Europe/Zurich timezone

Large scale phenomenology of viable Horndeski models

Sep 4, 2019, 3:45 PM
25m

Speaker

Mr Simone Peirone (Leiden University)

Description

In my talk, I will present the impact of general, model independent conditions of theoretical stability and cosmological viability on the analysis of scalar-tensor theories with cosmological data. These conditions account for the avoidance of ghost and gradient instabilities as well as exponential growth of the scalar perturbations in the Dark Energy sector.
As an example, I will show the role of such conditions in the computation of emblematic Large Scale Structure observables and what we can learn from them in order to efficiently constrain Dark Energy and Modified Gravity against data.

Primary author

Mr Simone Peirone (Leiden University)

Co-author

Alessandra Silvestri (Leiden University)

Presentation materials