55 citations · 1.1k across the 76 of their papers we have counts for
6 papers · 1 filter
Interactive mixture of inhomogeneous dark fluids driven by dark energy: a dynamical systems analysis
Germán Izquierdo, Roberto C Blanquet-Jaramillo, Roberto A Sussman
We examine the evolution of an inhomogeneous mixture of non-relativistic pressureless cold dark matter (CDM), coupled to dark energy (DE) characterised by the equation of state par…
General bounds in Hybrid Natural Inflation
Gabriel German, Alfredo Herrera-Aguilar, Juan Carlos Hidalgo +2
Recently we have studied in great detail a model of Hybrid Natural Inflation (HNI) by constructing two simple effective field theories. These two versions of the model allow inflat…
Lemaitre-Tolman-Bondi dust solutions in f(R) gravity
Roberto A Sussman, Luisa G Jaime
We derive a class of non-static inhomogeneous dust solutions in f(R) gravity described by the Lemaitre-Tolman-Bondi (LTB) metric. The field equations are fully integrated for all p…
Dynamics of a spherically symmetric inhomogeneous coupled dark energy model with coupling term proportional to non relatvistic matter
German Izquierdo, Roberto C. Blanquet-Jaramillo, Roberto A. Sussman
Quasi--local scalar variables approach is applied to a spherically symmetric inhomogeneous Lema\^ıtre--Tolman--Bondi metric containing a mixture of non-relativistic cold dark matte…
Approaching the Dark Sector through a bounding curvature criterion
X. Hernandez, R. A. Sussman, L. Nasser
Understanding the observations of dynamical tracers and the trajectories of lensed photons at galactic scales within the context of General Relativity (GR), requires the introducti…
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…