17 citations · 57 across the 15 of their papers we have counts for
3 papers · 1 filter
On covariant perturbations with scalar field in modified Gauss-Bonnet gravity
Albert Munyeshyaka, Joseph Ntahompagaze, Tom Mutabazi +1
We investigate cosmological perturbations of f(G) gravity in the presence of a scalar field. Using the 1 + 3 covariant formalism, we present the energy overdensity perturbation equ…
On Chaplygin models in f(G) gravity
Fidele Twagirayezu, Abraham Ayirwanda, Albert Munyeshyaka +3
The current work treats cosmological perturbation in a mixture of standard matter, Chaplygin gas as well as Gauss-bonnet fluids using a 1+3 covariant approach in the context of mod…
On 1 + 3 covariant perturbations of the quasi-Newtonian space-time in modified Gauss-Bonnet gravity
Albert Munyeshyaka, Joseph Ntahompagaze, Tom Mutabazi +1
The consideration of a 1 + 3 covariant approach to cold dark matter universe with no shear cosmological dust model with irrotational flows is developed in the context of f (G) grav…