19 citations · 89 across the 15 of their papers we have counts for
8 papers · 1 filter
Study of dynamical systems and large-scale structure
Dumiso Mithi, Saikat Charkraborty, Shambel Sahlu +1
In this study, we employ dynamical systems methods to analyse the large-scale structure by considering two distinct interaction models (linear and non-linear) within the dark secto…
III. Interacting Dark Energy: Summary of Models, Pathologies, and Constraints
Marcel van der Westhuizen, Amare Abebe, Eleonora Di Valentino
We present an overview of the main results from our two companion papers that are relevant for observational constraints on interacting dark energy (IDE) models. We provide analyti…
I. Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
Marcel van der Westhuizen, Amare Abebe, Eleonora Di Valentino
Interacting dark energy (IDE) models, in which dark matter (DM) and dark energy (DE) exchange energy through a non-gravitational interaction, have long been proposed as candidates…
II. Non-Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
Marcel van der Westhuizen, Amare Abebe, Eleonora Di Valentino
We investigate interacting dark energy (IDE) models with phenomenological, non-linear interaction kernels , specifically $Q_{1}=3Hδ\left(\frac{ρ_{\rm dm}ρ_{\rm de}}{ρ_{\rm dm}+ρ…
Challenging CDM with Higher-Order GUP Corrections
Andronikos Paliathanasis, Genly Leon, Yoelsy Leyva +2
We study quantum corrections to the CDM model model arising from a minimum measurable length in Heisenberg's uncertainty principle. We focus on a higher-order Generalized Uncert…
Constraining the modified symmetric teleparallel gravity using cosmological data
Shambel Sahlu, Amare Abebe
This paper examines the late-time accelerating Universe and the formation of large-scale structures within the modified symmetric teleparallel gravity framework, specifically using…
Constraining viscous fluid models in gravity with data
Shambel Sahlu, Renier T. Hough, Amare Abebe +1
We investigate the impact of bulk viscosity on the accelerating expansion and large-scale structure formation of a Universe in which the underlying gravitational interaction is des…
Structure growth in cosmology
Shambel Sahlu, Álvaro de la Cruz-Dombriz, Amare Abebe
We take into account redshift-space distortion measurements to investigate the growth of cosmological large-scale structures within the framework of modified symmetric teleparallel…