89 citations · 670 across the 46 of their papers we have counts for
6 papers · 1 filter
Model independent bounds for the number of -folds during the evolution of the universe
G. German, R. Gonzalez Quaglia, A. M. Moran Colorado
We present a simple procedure to obtain universal bounds for quantities of cosmological interest, such as the number of -folds during inflation, reheating, and radiation, as wel…
A comparison between the Jordan and Einstein Frames in Brans-Dicke theories with torsion
R. Gonzalez Quaglia, Gabriel German
In recent years, gravitational models motivated by quantum corrections to gravity which introduce higher order terms like or terms in which the Riemann tensor is not symmet…
Evolution of the universe during the inflationary epoch
Gabriel German
We often find in the literature solutions to the Friedmann and fluid equations for simple cosmological models during the matter, radiation or cosmological constant dominated epochs…
Geodesic structure of a rotating regular black hole
Brandon Bautista-Olvera, Juan Carlos Degollado, Gabriel German
We examine the dynamics of particles around a rotating regular black hole. In particular we focus on the effects of the characteristic length parameter of the spinning black hole o…
Non-Spherical Szekeres models in the language of Cosmological Perturbations
Roberto A. Sussman, Juan Carlos Hidalgo, Ismael Delgado Gaspar +1
We study the differences and equivalences between the non-perturbative description of the evolution of cosmic structure furnished by the Szekeres dust models (a non-spherical exact…
On spherical dust fluctuations: the exact vs. the perturbative approach
Roberto A. Sussman, Juan Carlos Hidalgo, Peter K. S. Dunsby +1
We examine the relation between the dynamics of Lema\^ıtre-Tolman-Bondi (LTB) dust models (with and without ) and the dynamics of dust perturbations in two of the more familiar…