68 citations · 765 across the 90 of their papers we have counts for
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de Sitter geodesics in stereographic charts
Ion I. Cotaescu
It is shown that the stereographic coordinates on the -dimensional de Sitter spacetime induce, in the parametric equations of all the timelike geodesics, artificial singular…
Covariant fields on anti-de Sitter spacetimes
Ion I. Cotaescu
The covariant free fields of any spin on anti-de Sitter spacetimes are studied, pointing out that these transform under isometries according to covariant representations of the ant…
Anti-de Sitter relativity
Ion I. Cotaescu
The relative geodesic motion on -dimensional anti-de Sitter spacetimes is studied in terms of conserved quantities by adapting the Nachtmann boosting method created initiall…
Simple kinematic effects on de Sitter expanding universe
Ion I. Cotaescu
Our recent results concerning the transformation under isometries of the conserved quantities on de Sitter manifolds, allow us to define the rest frame and study the relative geode…
Physical meaning of the conserved quantities on anti-de Sitter geodesics
Ion I. Cotaescu
The geodesic motion on anti-de Sitter spacetimes is studied pointing out how the trajectories are determined by the ten independent conserved quantities associated to the specific…
Rest frames and relativistic effects on de Sitter spacetimes
Ion I. Cotaescu
It is shown that the Nachtmann boosting method of introducing coordinates on de Siter manifolds can be completed with suitable gauge transformations able to keep under control the…