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de Sitter geodesics: reappraising the notion of motion
(Springer/plenum Publishers, 2012-05-01)
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 this property. As a consequence, there are ...
de Sitter geodesics: reappraising the notion of motion
(Springer/plenum Publishers, 2012-05-01)
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 this property. As a consequence, there are ...
Dark energy as a kinematic effect
(2016-03-01)
We present a generalization of teleparallel gravity that is consistent with local spacetime kinematics regulated by the de Sitter group SO(1, 4). The mathematical structure of teleparallel gravity is shown to be given by ...
De sitter-invariant approach to cosmology
(Universidade Estadual Paulista (Unesp), 2022-10-20)
A crucial problem of spacetime physics is the lack of a special relativity that could describe the Planck scale kinematics. The problem stems from the existence of an invariant length at the Planck scale, dubbed Planck ...
Entropy in locally-de Sitter spacetimes
(World Scientific Publ Co Pte Ltd, 2015-12-01)
As quotient spaces, Minkowski and de Sitter are fundamental spacetimes in the sense that they are known a priori, independently of Einstein equation. They represent different nongravitational backgrounds for the construction ...
De Sitter Relativity: a New Road to Quantum Gravity?
(Springer, 2009-01-01)
The Poincar, group generalizes the Galilei group for high-velocity kinematics. The de Sitter group is assumed to go one step further, generalizing Poincar, as the group governing high-energy kinematics. In other words, ...
De Sitter Relativity: a New Road to Quantum Gravity?
(Springer, 2009-01-01)
The Poincar, group generalizes the Galilei group for high-velocity kinematics. The de Sitter group is assumed to go one step further, generalizing Poincar, as the group governing high-energy kinematics. In other words, ...
de Sitter geodesics: reappraising the notion of motion
(Springer/plenum Publishers, 2013)
Some implications of the cosmological constant to fundamental physics
(2007-09-25)
In the presence of a cosmological constant, ordinary Poincaré special relativity is no longer valid and must be replaced by a de Sitter special relativity, in which Minkowski space is replaced by a de Sitter spacetime. In ...
Some implications of the cosmological constant to fundamental physics
(2007-09-25)
In the presence of a cosmological constant, ordinary Poincaré special relativity is no longer valid and must be replaced by a de Sitter special relativity, in which Minkowski space is replaced by a de Sitter spacetime. In ...