35 citations · 66 across the 7 of their papers we have counts for
10 papers
Extracellular polymeric bacterial coverages as minimal area surfaces
Alberto Saa, Omar Teschke
Surfaces formed by extracellular polymeric substances enclosing individual and some small communities of {\it Acidithiobacillus ferrooxidans} on plates of hydrophobic silicon and h…
The radiation of a uniformly accelerated charge is beyond the horizon: a simple derivation
Camila de Almeida, Alberto Saa
We show, by exploring some elementary consequences of the covariance of Maxwell's equations under general coordinate transformations, that, despite inertial observers can indeed de…
Volume elements and torsion
Ricardo A. Mosna, Alberto Saa
We reexamine here the issue of consistency of minimal action formulation with the minimal coupling procedure (MCP) in spaces with torsion. In Riemann-Cartan spaces, it is known tha…
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…
Stability properties and asymptotics for N non-minimally coupled scalar fields cosmology
L. Brenig, A. Figueiredo, E. Gunzig +2
We consider here the dynamics of some homogeneous and isotropic cosmological models with interacting classical scalar fields non-minimally coupled to the spacetime curvature, a…
Dynamical study of the singularities of gravity in the presence of non-minimally coupled scalar fields
L. R. Abramo, L. Brenig, E. Gunzig +1
We investigate the dynamics of Einstein equations in the vicinity of the two recently described types of singularity of anisotropic and homogeneous cosmological models described by…