3 citations · 7 across the 6 of their papers we have counts for
7 papers
Starobinsky Inflation and the Latest CMB Data: A Subtle Tension?
J. Bezerra-Sobrinho, L. G. Medeiros
We analyze the Starobinsky inflation model and the impact of curvature corrections, particularly a cubic term, to assess their behavior in light of the latest observational r…
Higher-order gravity models: corrections up to cubic curvature invariants and inflation
C. M. G. R. Morais, G. Rodrigues-da-Silva, L. G. Medeiros
We construct a higher-order gravity model including all corrections up to mass dimension six. Starting from the Jordan frame, we derive the field equations and specialize to the FL…
Implications of a high growth index on the variation of
Ícaro. B. S. Cortês, Léo. G. Medeiros, Ronaldo C. Batista
A recent determination of the growth index indicates a value significantly higher than the CDM prediction, suggesting that alternative scenarios to CDM may be required. In th…
Critical masses and numerical computation of massive scalar quasinormal modes in Schwarzschild black holes
Matheus F. S. Alves, Bruno P. Pônquio, L. G. Medeiros
We present a comprehensive analysis of the quasinormal modes (QNMs) of a massive scalar field in Schwarzschild spacetime using two complementary numerical techniques: the Hill-dete…
Gravitational waveforms from inspiraling compact binaries in quadratic gravity and their parameterized post-Einstein characterization
Matheus F. S. Alves, L. G. Medeiros, Davi C. Rodrigues
We investigate gravitational waveforms from the inspiral phase of compact binary systems within the framework of quadratic gravity and map their deviations from general relativity…
Gauges for quadratic gravity: the extended transverse gauge and the energy-momentum tensor of the massive spin-2 field
Matheus F. S. Alves, L. G. Medeiros, Davi C. Rodrigues
We study the 4D Einstein-Hilbert action extension based on the square of the curvature tensors. Analyses of gauge and perturbation modes are often done considering the Teyssandier…
Analytical warm dark matter power spectrum on small scales
G. Pordeus-da-Silva, R. C. Batista, L. G. Medeiros
Using the Reduced Relativistic Gas (RRG) model, we analytically determine the matter power spectrum for Warm Dark Matter (WDM) on small scales, . The RRG is a si…