103 citations · 213 across the 5 of their papers we have counts for
5 papers
Constraining the gravitational action with CMB tensor anisotropies
M. Abdelwahab, A. de la Cruz-Dombriz, P. K. S. Dunsby +1
We present a complete analysis of the imprint of tensor anisotropies on the Cosmic Microwave Background for a class of f(R) gravity theories within the PPF-CAMB framework. We deriv…
Cosmological dynamics of fourth order gravity: A compact view
Mohamed Abdelwahab, Rituparno Goswami, Peter K. S. Dunsby
We construct a compact phase space for flat FLRW spacetimes with standard matter described by a perfect fluid with a barotropic equation of state for general f(R) theories of gravi…
Covariant gauge-invariant perturbations in multifluid f(R) gravity
Amare Abebe, Mohamed Abdelwahab, Alvaro de la Cruz-Dombriz +1
We study the evolution of scalar cosmological perturbations in the (1+3)- covariant gauge-invariant formalism for generic theories of gravity. Extending previous works, we g…
Unifying the study of background dynamics and perturbations in -gravity
Sante Carloni, Kishore N. Ananda, Peter K. S. Dunsby +1
In this paper we show how the covariant gauge invariant equations for the evolution of scalar, vector and tensor perturbations for a generic -gravity theory can be recast in…
Cosmological dynamics of exponential gravity
M. Abdelwahab, S Carloni, P K. S. Dunsby
We present a detailed investigation of the cosmological dynamics based on gravity. We apply the dynamical system approach to both the vacuum and matter cases and obta…