299 citations · 966 across the 66 of their papers we have counts for
5 papers · 1 filter
Viability tests of \textit{f(R)}-gravity models with Supernovae Type 1A data
Renier Hough, Amare Abebe, Stefan Ferreira
In this work, we will be testing four different general \textit{f(R)}-gravity models, two of which are the more realistic models (namely the Starobinsky and the Hu-Sawicki models),…
Deflection of Light by a Rotating Black Hole Surrounded by "Quintessence"
Prateek Sharma, Hemwati Nandan, Radouane Gannouji +2
We present a detailed analysis of a rotating black hole surrounded by "quintessence". This solution represents a fluid with a constant equation of state, , which can for example…
Constraining chameleon field driven warm inflation with Planck 2018 data
Haidar Sheikhahmadi, Abolhassan Mohammadi, Ali Aghamohammadi +5
We investigate warm inflationary scenario in which the accelerated expansion of the early Universe is driven by chameleon-like scalar fields. Due to the non-minimal coupling betwee…
Scalar perturbations in gravity using the covariant approach
Shambel Sahlu, Joseph Ntahompagaze, Amare Abebe +2
The cosmological scalar perturbations of standard matter are investigated in the context of extended teleparallel gravity theories using the covariant formalism. After…
The Chaplygin gas as a model for modified teleparallel gravity?
Shambel Sahlu, Joseph Ntahompagaze, Maye Elmardi +1
This paper explores the possibility of treating the exotic Chaplygin-gas (CG) fluid model as some manifestation of an gravitation. To this end, we use the different cosmolog…