636 citations
- Centro Brasileiro de Pesquisas FísicasBR71 papers
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6 papers · 2 filters
On the gravitational angular momentum of rotating sources
J. W. Maluf, S. C. Ulhoa
The gravitational energy-momentum and angular momentum satisfy the algebra of the Poincare group in the full phase space of the teleparallel equivalent of general relativity. The e…
Quaternion-Loop Quantum Gravity
M. D. Maia, S. S. e Almeida Silva, F. S. Carvalho
It is shown that the Riemannian curvature of the 3-dimensional hypersurfaces in space-time, described by the Wilson loop integral, can be represented by a quaternion quantum operat…
The energy-momentum of plane-fronted gravitational waves in the teleparallel equivalent of GR
J. W. Maluf, S. C. Ulhoa
We show that in the framework of the teleparallel equivalent of general relativity the gravitational energy-momentum of plane-fronted gravitational waves contained in an arbitrary…
Proof of a decomposition theorem for symmetric tensors on spaces with constant curvature
Norbert Straumann
In cosmological perturbation theory a first major step consists in the decomposition of the various perturbation amplitudes into scalar, vector and tensor perturbations, which mutu…
Geodesic Motion on Closed Spaces: Two Numerical Examples
Daniel Muller
The geodesic structure is very closely related to the trace of the Laplace operator, involved in the calculation of the expectation value of the energy momentum tensor in Universes…
Gravitomagnetism in teleparallel gravity
E. P. Spaniol, V. C. de Andrade
The assumption that matter charges and currents could generate fields, which are called, by analogy with electromagnetism, gravitoeletric and gravitomagnetic fields, dates from the…