Navegação Ciências Exatas e da Terra por Autor "Nunes, Rafael da Costa"
Resultados 1-5 de 5
-
Forecasting constraints on deviations from general relativity in f ( Q ) gravity with standard sirens
D'Agostino, Rocco; Nunes, Rafael da Costa (2022) [Artigo de periódico]In this work, we explore how modified gravity theories based on the nonmetricity scalar, known as fðQÞ gravity, affect the propagation of gravitational waves from inspiraling of binary systems. We discuss forecast constraints ... -
Inferring S8(z) and γ (z) with cosmic growth rate measurements using machine learning
Avila, Felipe; Bernui, Armando; Bonilla, Alexander; Nunes, Rafael da Costa (2022) [Artigo de periódico]Measurements of the cosmological parameter S8 provided by cosmic microwave background and large scale structure data reveal some tension between them, suggesting that the clustering features of matter in these early and ... -
Late-time interacting cosmologies and the Hubble constant tension
Gariazzo, Stefano; Di Valentino, Eleonora; Mena Requejo, Olga; Nunes, Rafael da Costa (2022) [Artigo de periódico]In this manuscript we reassess the potential of interacting dark matter–dark energy models in solving the Hubble constant tension. These models have been proposed but also questioned as possible solutions to the H0 problem. ... -
New cosmological constraints on f(T) gravity in light of full Planck-CMB and type Ia supernovae data
Kumar, Suresh; Nunes, Rafael da Costa; Yadav, Priya (2023) [Artigo de periódico]We investigate two new observational perspectives in the context of torsional gravitational modification of general relativity, i.e., the f(T) gravity: (i) We use Pantheon data of type Ia supernovae motivated by a time ... -
New tests of dark sector interactions from the full-shape galaxy power spectrum
Nunes, Rafael da Costa; Vagnozzi, Sunny; Kumar, Suresh; Di Valentino, Eleonora; Mena Requejo, Olga (2022) [Artigo de periódico]We explore the role of redshift-space galaxy clustering data in constraining nongravitational interactions between dark energy (DE) and dark matter (DM), for which state-of-the-art limits have so far been obtained from ...