299 citations · 966 across the 66 of their papers we have counts for
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gr-qc2011★ 103 cited
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…
gr-qc2011★ 15 cited
On Shear-free perturbations of f(R) gravity
Amare Abebe, Rituparno Goswami, Peter K. S. Dunsby
Recently it was shown that if the matter congruence of a general relativistic perfect fluid flow in an almost FLRW universe is shear-free, then it must be either expansion or rotat…