44 citations · 263 across the 25 of their papers we have counts for
25 papers
Future dynamics in f(R) theories
D. Müller, V. C. de Andrade, C. Maia +2
The gravity theories provide an alternative way to explain the current cosmic acceleration without invoking dark energy matter component. However, the freedom in the choice…
Oscillation of a rigid rod in the special relativity
F. M. Paiva, A. F. F. Teixeira
In the special relativity, a rigid rod slides upon itself, with one extremity oscillating harmonically. We discovered restrictions in the amplitude of the motion and in the length…
La relativeca tempo -- II / The relativistic time -- II
F. M. Paiva, A. F. F. Teixeira
The theory of relativity showed that several Newtonian ideas about spacetime are imperfect. We present here some relativistic concepts related to these ideas: simultaneity of event…
Geodesics of simultaneity in Schwarzschild
F. M. Paiva, A. F. F. Teixeira
Geodesic of simultaneity is a spacelike geodesic in which every pair of neighbour events are simultaneous ($g_{0μ}\dd x^μ=0$). These geodesics are studied in the exterior region of…
Relativistic Doppler effect in a uniformly accelerated motion - III
F M Paiva, A F F Teixeira
In the context of special relativity, we describe with detail the Doppler effect between a light source at rest and an observer in linear motion and constant proper acceleration. T…
Experimentally obtaining metrics in general relativity
A F F Teixeira
It seems to be not well known that the metrics of general relativity (GR) can be obtained without integrating Einstein equations. To that, we need only define a unit for GR-interva…