81 citations · 237 across the 13 of their papers we have counts for
13 papers
Robinson-Trautman spacetimes in (2+1) dimensions
Alberto Saa
We propose a Robinson-Trautman evolution in -dimensional spacetime that retains key structural features of the four-dimensional case. We consider a recently studied exact fa…
Evolving scale-free networks and node-based random edge deletion
Everton R. Constantino, Alberto Saa
We investigate a growing network model that combines preferential and uniform attachment with two distinct mechanisms of edge deletion. In addition to the usual uniform random edge…
Unified dynamical system formulations for gravity with applications to nonminimal derivative coupling and -Higgs inflation
Saikat Chakraborty, Sergio E. Jorás, Alberto Saa
Two different dynamical system formulations are presented that can be implemented to analyze a rather large class of modified gravity theories within the generic family.…
Wind-Finslerian structure of black holes
Hengameh R. Dehkordi, Mauricio Richartz, Alberto Saa
Recently, there has been an increasing interest in the Finslerian interpretation of null geodesics in the exterior regions of stationary black holes, particularly through the Zerme…
Stability of the spacetime of a magnetized compact object
Eveling C. Ribeiro, L. Formigari, Marcos R. Ribeiro +5
We investigate the stability of scalar perturbations around a magnetized stationary compact object in General Relativity. The considered object is one of the simplest exact solutio…
Quasinormal modes and the analytical continuation of non-self-adjoint operators
M. G. Richarte, J. C. Fabris, A. Saa
We briefly review the analytical continuation method for determining quasinormal modes (QNMs) and the associated frequencies in open systems. We explore two exactly solvable cases…