15 citations · 35 across the 5 of their papers we have counts for
5 papers
Electromagnetically and gravitationally stealth fields
Cristian Quinzacara, Paola Meza, Almeira Sampson +1
We construct a generic class of models for complex scalar fields -- minimally coupled to gravity and electromagnetism -- with the property that their energy-momentum tensor and the…
Massive stealth scalar fields from field redefinition method
Cristian C. Quinzacara, Paola Meza, Almeira Sampson +1
We propose an uni-parametric deformation method of action principles of scalar fields coupled to gravity which generates new models with massive stealth field configurations, i.e.…
On the spacetime connecting two aeons in conformal cyclic cosmology
A. Araujo, H. Jennen, J. G. Pereira +2
As quotient spaces, Minkowski and de Sitter are fundamental, non-gravitational spacetimes for the construction of physical theories. When general relativity is constructed on a de…
de Sitter transitivity, conformal transformations and conservation laws
J. G. Pereira, A. C. Sampson, L. L. Savi
Minkowski spacetime is transitive under ordinary translations, a transformation that do not have matrix representations. The de Sitter spacetime, on the other hand, is transitive u…
de Sitter geodesics: reappraising the notion of motion
J. G. Pereira, A. C. Sampson
The de Sitter spacetime is transitive under a combination of translations and proper conformal transformations. Its usual family of geodesics, however, does not take into account t…