635 citations · 12.7k across the 245 of their papers we have counts for
5 papers · 2 filters
The shortest cut in brane cosmology
Elcio Abdalla, Bertha Cuadros-Melgar, Sze-Shiang Feng +1
We consider brane cosmology studying the shortest null path on the brane for photons, and in the bulk for gravitons. We derive the differential equation for the shortest path in th…
Scalar wave propagation in topological black hole backgrounds
Bin Wang, Elcio Abdalla, R. B. Mann
We consider the evolution of a scalar field coupled to curvature in topological black hole spacetimes. We solve numerically the scalar wave equation with different curvature-coupli…
Friedmann equation and Cardy formula correspondence in brane universes
Bin Wang, Elcio Abdalla, Ru-Keng Su
We study the brane with arbitrary tension on the edge of various black holes with AdS asymptotics. We investigate Friedmann equations governing the motion of the brane universe…
Relating Friedmann equation to Cardy formula in universes with cosmological constant
Bin Wang, Elcio Abdalla, Ru-Keng Su
A relation between the Friedmann equation and the Cardy formula has been found for de Sitter closed and Anti de Sitter flat universes. For the remaining (Anti) de Sitter universes…
Object picture of quasinormal ringing on the background of small Schwarzschild Anti-de Sitter black holes
Jiong-Ming Zhu, Bin Wang, Elcio Abdalla
We investigated the evolution of a scalar field propagating in small Schwarzschild Anti-de Sitter black holes. The imaginary part of the quasinormal frequency decreases with the ho…