251 citations
- Universidade Federal do ParanáBR23 papers
- Max Planck Institute for the Physics of Complex SystemsDE7 papers
- Universidade Federal de PelotasBR7 papers
- Universidade de São PauloBR6 papers
- Universidade Federal do Rio Grande do SulBR6 papers
- Centre National de la Recherche ScientifiqueFR5 papers
- Instituto Nacional de Pesquisas EspaciaisBR5 papers
- Universidade Federal de Santa CatarinaBR5 papers
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- International Center for Relativistic AstrophysicsIT4 papers
- Universidade Federal de São CarlosBR4 papers
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9 papers · 1 filter
Twins in relativistic spacetimes: dispelling some misconceptions
T. A. A. da Câmara, P. S. Lemos, M. O. Calvão +1
In contrast to Newtonian physics, there is no absolute time in relativistic (Lorentzian) spacetimes. This immediately implies that two twins may, in general, age at different rates…
Geometry of Curved Spacetimes Equipped with Torsionful Affinities and Einstein-Cartan's Theory in Two-Component Spinor Form
J. G. Cardoso
The classical world structures borne by spacetimes endowed with torsionful affinities are reviewed. Subsequently, the definition and symmetry properties of a typical pair of Witten…
On the Weyl Tensor for a Curved Spacetime Endowed with a Torsionful Affinity
J. G. Cardoso
We transcribe into the framework of the torsionful version of the ε-formalism of Infeld and van der Waerden the world definition of the Weyl tensor for a curved spacetime that occu…
A Torsional Two-Component Description of the Motion of Dirac Particles at Early Stages of the Cosmic Evolution
J. G. Cardoso
It is assumed that the non-singular big-bang birth of the Universe as set forth by Einstein-Cartan's theory particularly brought about the appearance of the cosmic microwave and da…
The non-singular Trautman-Kopczyński big-bang model and a torsional spinor description of dark matter
J. G. Cardoso
A view is taken up whereby the non-singular Trautman-Kopczyński big-bang creation of the Universe produced a highly torsional hot state at early stages of the cosmic evolution whic…
Wave Equations for Classical Two-Component Proca Fields in Curved Spacetimes with Torsionless Affinities
S. I. Santos Junior, J. G. Cardoso
The world formulation of the full theory of classical Proca fields in generally relativistic spacetimes is concisely reviewed and the entire set of pertinent field equations is tra…