619 citations · 4.2k across the 87 of their papers we have counts for
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Dark matter, dark energy, and dark radiation coupled with a transversal interaction
Luis P. Chimento, Martín G. Richarte
We investigate a cosmological scenario with three interacting components that includes dark matter, dark energy, and radiation in the spatially flat Friedmann-Robertson-Walker univ…
Inhomogeneous Exact Solutions with Varying Cosmological Term
Luis P. Chimento, Diego Pavón
We study the evolution of LTB Universe models possessing a varying cosmological term and a material fluid.
Asymptotic behaviour of Bianchi VI(o) solutions with an exponential potential scalar field
Luis P. Chimento, Pablo Labraga
We obtain some solutions to the Einstein-Klein-Gordon equations without a cosmological constant for an exponential potential scalar field in a Bianchi VI metric and investigate…
Mathematical Features of Several Cosmological Models
Luis P. Chimento, Alejandro S. Jakubi
Einstein equations for several matter sources in homogeneous, isotropic metric are shown to reduce to a second order nonlinear ordinary differential equation. An analysis of its so…
Evolution of a universe filled with a causal viscous fluid
Luis P. Chimento, Alejandro S. Jakubi
The behaviour of solutions to the Einstein equations with a causal viscous fluid source is investigated. In this model we consider a spatially flat Robertson-Walker metric, the bul…
Exact self-interacting scalar field cosmologies
Luis P. Chimento, Adriana E. Cossarini, Alejandro S. Jakubi
We solve isotropic, homogeneous cosmological models containing a self-interacting scalar field. Calculations are performed in four and two-dimensional spacetimes. We find several e…