19 citations · 139 across the 24 of their papers we have counts for
25 papers
On the quasinormal modes in generalized Nariai spacetimes
Joás Venâncio
Quasinormal modes are eigenmodes of dissipative systems. For instance, if a spacetime with an event or cosmological horizon is perturbed from its equilibrium state, quasinormal mod…
On the Equivalence of Spacetimes, the Cartan-Karlhede Algorithm
Thiago M. Mergulhão, Carlos Batista
It is well known that in general relativity theory two spacetimes whose metrics are related by a coordinate transformation are physically equivalent. However, given two line elemen…
Two-Component Spinorial Formalism using Quaternions for Six-dimensional Spacetimes
Joás Venâncio, Carlos Batista
In this article we construct and discuss several aspects of the two-component spinorial formalism for six-dimensional spacetimes, in which chiral spinors are represented by objects…
On Conserved Quantities for the Free Motion of Particles with Spin
Carlos Batista, Esdras Barbosa dos Santos
In the early 80's, R. Rüdiger published a pair of articles in which it was found the most general conserved charges associated to the motion of particles with spin moving in curved…
Spin 2 Quasinormal Modes in Generalized Nariai Spacetimes
Carlos Batista, Joás Venâncio
In this work we analytically obtain the quasinormal spectrum for the gravitational perturbation on a higher-dimensional generalization of the Nariai spacetime that is comprised of…
A Class of Higher-Dimensional Solutions of Einstein's Vacuum Equation
Carlos Batista, Gabriel Luz Almeida
A new class of higher-dimensional exact solutions of Einstein's vacuum equation is presented. These metrics are written in terms of the exponential of a symmetric matrix and when t…