932 citations · 3.2k across the 35 of their papers we have counts for
35 papers
Gravitational wave stochastic background in reduced Horndeski theories
João C. Lobato, Isabela S. Matos, Maurício O. Calvão +1
We generalize to reduced Horndeski theories of gravity, where gravitational waves (GWs) travel at the speed of light, the expression of a statistically homogeneous and unpolarized…
New dynamical system approach to Palatini theories and its application to exponential gravity
João C. Lobato, Isabela S. Matos, Maurício O. Calvão +1
The approach of dynamical systems is a useful tool to investigate the cosmological history that follows from modified theories of gravity. It provides qualitative information on th…
Gravitational wave propagation in models: New parametrizations and observational constraints
Isabela S. Matos, Maurício O. Calvão, Ioav Waga
Modified gravity (MG) theories predict, in general, that the ratio of gravitational wave (GW) to electromagnetic (EM) luminosity distances, , differs from its general relativity…
Top-Hat Spherical Collapse with Clustering Dark Energy. I. Radius Evolution and Critical Contrast Density
D. Herrera, I. Waga, S. E. Jorás
Understanding the influence of dark energy on the formation of structures is currently a major challenge in Cosmology, since it can distinguish otherwise degenerated viable models.…
Calculation of the critical overdensity in the spherical-collapse approximation
D. Herrera, I. Waga, S. E. Jorás
Critical overdensity is a key concept in estimating the number count of halos for different redshift and halo-mass bins, and therefore, it is a powerful tool to compare cosmo…
N-body Simulations of Gravity
Marcelo Vargas dos Santos, Hans A. Winther, David F. Mota +1
We have investigated structure formation in the gravity model with {\it N}-body simulations. The gravity model is a proposal which, unlike other viable models…