1.7k citations · 9.9k across the 42 of their papers we have counts for
42 papers
Causality and Stability from Acoustic Geometry
Ignacy Sawicki, Georg Trenkler, Alexander Vikman
In scalar-tensor theories with derivative interactions, backgrounds spontaneously break local Lorentz invariance. We study the motion of perturbations of the scalar, "phonons", on…
Fully relativistic predictions in Horndeski gravity from standard Newtonian N-body simulations
Guilherme Brando, Kazuya Koyama, David Wands +3
The N-body gauge allows the introduction of relativistic effects in Newtonian cosmological simulations. Here we extend this framework to general Horndeski gravity theories, and inv…
hi_class: Background Evolution, Initial Conditions and Approximation Schemes
Emilio Bellini, Ignacy Sawicki, Miguel Zumalacárregui
Cosmological datasets have great potential to elucidate the nature of dark energy and test gravity on the largest scales available to observation. Theoretical predictions can be co…
Modified gravity, gravitational waves and the large-scale structure of the Universe: A brief report
Ippocratis D. Saltas, Luca Amendola, Martin Kunz +1
The goal of this short report is to summarise some key results based on our previous works on model independent tests of gravity at large scales in the Universe, their connection w…
Redshift-space distortions from vector perturbations II: Anisotropic signal
Vittorio Tansella, Camille Bonvin, Giulia Cusin +3
We study the impact on the galaxy correlation function of the presence of a vector component in the tracers' peculiar velocities, in the case in which statistical isotropy is viola…
White dwarfs and revelations
Ippocratis D. Saltas, Ignacy Sawicki, Ilidio Lopes
We use the most recent, complete and independent measurements of masses and radii of white dwarfs in binaries to bound the class of non-trivial modified gravity theories, viable af…