5 papers
The Roche-Lobe Radius in Newtonian and Non-Newtonian Gravity
A. M. Velasquez-Toribio
In this paper, we extend the standard calculation of the Roche lobe from the Newtonian potential to non-Newtonian models, specifically Yukawa-type and power-law potentials. These m…
Dynamical systems analysis of unimodular cosmology in dimensions
A. M. Velásquez-Toribio, J. C. Fabris
We investigate the effective four-dimensional cosmology induced by unimodular gravity in dimensions, where the internal extra-dimensional volume is encoded in a scalar degr…
Studying spherical collapse and its implications in the Eddington-inspired Born-Infeld gravity theory
A. M Velásquez-Toribio
We investigate spherical collapse in Eddington-inspired Born--Infeld (EiBI) gravity in the subhorizon, pressureless, and quasi-static regime, emphasizing the matter-gradient correc…
A dynamical systems approach to studying the equivalence principle in dilaton gravity
A. M. Velásquez-Toribio
We study a string-inspired dilaton cosmology in the Damour--Polyakov (DP) regime using dynamical-systems methods, aiming to make explicit how cosmological relaxation controls devia…
The Scalar Mach-Sciama Theory of Gravitation
Velásquez-Toribio, A. M
We formulate a scalar realization of Sciama's Machian programme within the general Bergmann-Wagoner class of scalar--tensor gravity. Starting from a universally conformally coupled…