5 papers
Lagrangian Extensions of Newtonian Gravity constrained by Solar System tests
Pedro H. Dalprá, Júlio C. Fabris, Hermano Velten +1
We explore an extension to Newtonian gravity through a generalised Lagrangian function with the introduction of a second dynamical scalar field. Building on previous research into…
In-depth analysis of violations of the (strong) equivalence principle in scalarized Einstein-Gauss-Bonnet theories
MartÃn G. Richarte, Júnior D. Toniato
We conducted a theoretical analysis of the violation of the equivalence principle within a broad class of scalar-Einstein-Gauss-Bonnet theories that exhibit spontaneous scalarizati…
A note on Gravitational radiation in generalized Brans-Dicke theory: compact binary systems
Diego S. Jesus, Hermano Velten, Júnior D. Toniato
This note revisits and corrects a previous analysis on gravitational radiation in compact binary systems within the framework of Brans-Dicke-f(R) theories-models featuring both mas…
A new framework for cosmological expansion in a reformulated Newtonian-Like gravity with variable G
Felipe S. Escórcio, Júlio C. Fabris, Júnior D. Toniato +1
A Newtonian-like theory inspired by the Brans-Dicke gravitational Lagrangian has been recently proposed in Ref. arXiv:2009.04434(v4). We propose here a new variant of this theory s…
Exploring Scalarized Einstein-Gauss-Bonnet Theories Through the Lens of Parametrized Post-Newtonian Formalism
MartÃn G. Richarte, Júnior D. Toniato
We explore scalarized Einstein-Gauss-Bonnet theories within the context of the Parameterized Post-Newtonian formalism, which serves as a robust framework for examining modification…