550 citations · 5.4k across the 64 of their papers we have counts for
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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,…
Most general cubic-order Horndeski Lagrangian allowing for scaling solutions and the application to dark energy
Noemi Frusciante, Ryotaro Kase, Nelson J. Nunes +1
In cubic-order Horndeski theories where a scalar field is coupled to nonrelativistic matter with a field-dependent coupling , we derive the most general Lagrangian having…
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…
New scaling solutions in cubic Horndeski theories
Ines S. Albuquerque, Noemi Frusciante, Nelson J. Nunes +1
We propose a viable dark energy scenario in the presence of cubic Horndeski interactions and a standard scalar-field kinetic term with two exponential potentials. We show the exist…