635 citations · 6.4k across the 144 of their papers we have counts for
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Scalar cosmological perturbation in an inflationary brane world driven by the bulk inflaton
Da-Ping Du, Bin Wang, Elcio Abdalla +1
We investigate scalar perturbations from inflation in a bulk inflaton braneworld model. Using the generalized longitudinal gauge, we derive and solve the full set of scalar perturb…
WMAP constraint on the P-term inflationary model
Bin Wang, Chi-Yong Lin, Elcio Abdalla
In light of WMAP results, we examine the observational constraint on the P-term inflation. With the tunable parameter , P-term inflation contains richer physics than D-term and…
Field propagation in the Schwarzschild-de Sitter black hole
C. Molina, E. Abdalla, A. Saa
We present an exhaustive analysis of scalar, electromagnetic and gravitational perturbations in the background of a Schwarzchild-de Sitter spacetime. The field propagation is consi…
A plausible upper limit on the number of e-foldings
Bin Wang, Elcio Abdalla
Based solely on the arguments relating Friedmann equation and the Cardy formula we derive a bound for the number of e-folds during inflation for a standard Friedmann-Robertson-Walk…
A model displaying extremely inhomogeneous matter distribution in General Relativity
Elcio Abdalla, Cecilia B. M. H. Chirenti
We consider a toy metric in four dimensional space-time defined in terms of a recursive hierarchical prescription. The matter distribution turns out to be extremely inhomogeneous.…