55 citations · 1.1k across the 76 of their papers we have counts for
76 papers
Growth rate of spherical voids with non-comoving Dark Matter and Baryons
Fernando A. Pizaña, Juan Carlos Hidalgo, Ismael Delgado Gaspar +1
We present numerical solutions to Einstein's equations describing large spherical cosmic voids constituted by two components; dark matter and baryons, with a non-vanishing initial…
Gravitational Entropy in Szekeres Class I Models
Fernando A. Pizaña, Roberto A. Sussman, Juan Carlos Hidalgo
Gravitational entropy is an elusive concept. Various theoretical proposals have been presented, initially based on Penrose's Weyl Curvature Hypothesis, and variations of it. A more…
Evolution equations dynamical system of the Lemaître--Tolman--Bondi metric containing coupled dark energy
Roberto C. Blanquet-Jaramillo, Roberto A. Sussman, Maximo Aguero +1
We consider inhomogeneous spherically symmetric models based on the Lemaître-Tolman-Bondi (LTB) metric, assuming as its source an interactive mixture of ordinary baryonic matter, c…
Inhomogeneous solutions in gravity
Sebastián Nájera, Aram Aguilar, Geovanny A. Rave-Franco +2
In this paper we explore the possibility to find exact solutions for Teleparallel Gravity (TG) of the type of spherically symmetric Lema\^ıtre-Tolman-Bondi (LTB) dust models. We ap…
The first non-static inhomogeneous exact solution in gravity
Sebastián Nájera, Aram Aguilar, Celia Escamilla-Rivera +1
We examine in this paper the possibility of finding exact solutions for Teleparallel Gravity (TG) of the type of spherically symmetric Lema\^ıtre-Tolman-Bondi (LTB) dust models. We…
Comment on "Szekeres universes with homogeneous scalar fields"
Ismael Delgado Gaspar, Roberto A. Sussman, David D. McNutt +1
Two recently published papers (J.D. Barrow and A. Paliathanasis, Eur. Phys. J. C. (2018, 2019)) claim to have found exact solutions of Einstein's field equations belonging to the c…