75 citations · 202 across the 12 of their papers we have counts for
21 papers
Constraining the anomalous coupling of gravitational waves with double pulsar
Diego Santos de Jesus, Hermano Velten, Federico Piazza
We revisit the decay of the orbital period in binary systems that occurs due to the emission of gravitational waves in the context of modified gravity models where the coupling $G_…
Skewness as a test of dark energy perturbations
Raquel Emy Fazolo, Luca Amendola, Hermano Velten
We investigate the role played by dark energy perturbations in the skewness of large-scale matter distribution. We consider a two-fluid universe composed by matter and dark e…
Stellar structure in a Newtonian theory with variable
Júlio C. Fabris, Túlio Ottoni, Júnior D. Toniato +1
A Newtonian-like theory inspired by the Brans-Dicke gravitational Lagrangian has been recently proposed. For static configurations the gravitational coupling acquires an intrinsic…
Early-time thermalization of cosmic components? A hint for solving cosmic tensions
Hermano Velten, Ingrid Costa, Winfried Zimdahl
We study an expanding two-fluid model of non-relativistic dark matter and radiation which are allowed to interact during a certain time span and to establish an approximate thermal…
To conserve, or not to conserve: A review of nonconservative theories of gravity
Hermano Velten, Thiago R. P. Caramês
Apart from the familiar structure firmly-rooted in the general relativistic field equations where the energy--momentum tensor has a null divergence i.e., it conserves, there exists…
Newtonian-like gravity with variable
Júlio C. Fabris, Tales Gomes, Júnior D. Toniato +1
We propose a Lagrangian formulation for a varying Newtonian-like theory inspired by the Brans-Dicke gravity. Rather than imposing an {\it ad hoc} dependence for the gravitation…