242 citations · 966 across the 18 of their papers we have counts for
4 papers · 1 filter
The road ahead of Horndeski: cosmology of surviving scalar-tensor theories
Noemi Frusciante, Simone Peirone, Santiago Casas +1
In the context of the effective field theory of dark energy (EFT) we perform agnostic explorations of Horndeski gravity. We choose two parametrizations for the free EFT functions,…
The role of the tachyonic instability in Horndeski gravity
Noemi Frusciante, Georgios Papadomanolakis, Simone Peirone +1
The tachyonic instability is associated with the unboundedness of the Hamiltonian from below and results in an unstable low- regime. In the cosmological exploration of modified…
Phenomenology of Large Scale Structure in scalar-tensor theories: joint prior covariance of , and in Horndeski
Juan Espejo, Simone Peirone, Marco Raveri +3
Ongoing and upcoming cosmological surveys will significantly improve our ability to probe the equation of state of dark energy, , and the phenomenology of Large Scale S…
Large-scale structure phenomenology of viable Horndeski theories
Simone Peirone, Kazuya Koyama, Levon Pogosian +2
Phenomenological functions and , also known as and , are commonly used to parameterize modifications of the growth of large-scale structu…