Zobrazeno 1 - 10
of 39
pro vyhledávání: '"de Andrade, V. C."'
Publikováno v:
Eur. Phys. J. C 75 (2015) 13
The $f(R)$ gravity theories provide an alternative way to explain the current cosmic acceleration without invoking dark energy matter component. However, the freedom in the choice of the functional forms of $f(R)$ gives rise to the problem of how to
Externí odkaz:
http://arxiv.org/abs/1405.0768
Publikováno v:
Adv. Studies Theor. Phys., 6, no. 7, 325 - 337 (2012)
Using the Dirac procedure to treat constraints dynamical sistems applied to gravitation, as described in the context of Teleparallel Equivalent of General Relativity (TEGR), we investigate, from the first class constraints, the gauge transformations
Externí odkaz:
http://arxiv.org/abs/1108.3796
Autor:
Spaniol, E. P., de Andrade, V. C.
Publikováno v:
Int.J.Mod.Phys.D19:489-505,2010
The assumption that matter charges and currents could generate fields, which are called, by analogy with electromagnetism, gravitoeletric and gravitomagnetic fields, dates from the origins of General Relativity (GR). On the other hand, the Teleparall
Externí odkaz:
http://arxiv.org/abs/0802.2697
Publikováno v:
Int.J.Mod.Phys.D16:857-874,2007
We investigate the gravitational radiation produced by a linearly accelerated source in general relativity. The investigation is performed by studying the vacuum C metric, which is interpreted as representing the exterior space-time of an uniformly a
Externí odkaz:
http://arxiv.org/abs/gr-qc/0610102
Publikováno v:
Int.J.Mod.Phys. D14 (2005) 1635-1648
By generalizing the Hodge dual operator to the case of soldered bundles, and working in the context of the teleparallel equivalent of general relativity, an analysis of the duality symmetry in gravitation is performed. Although the basic conclusion i
Externí odkaz:
http://arxiv.org/abs/gr-qc/0501037
Publikováno v:
PoS WC2004 (2004) 028
The general covariance principle, seen as an active version of the principle of equivalence, is used to study the gravitational coupling prescription in the presence of curvature and torsion. It is concluded that the coupling prescription determined
Externí odkaz:
http://arxiv.org/abs/gr-qc/0412034
Publikováno v:
Int.J.Mod.Phys. D13 (2004) 807-818
According to the teleparallel equivalent of general relativity, curvature and torsion are two equivalent ways of describing the same gravitational field. Despite equivalent, however, they act differently: whereas curvature yields a geometric descript
Externí odkaz:
http://arxiv.org/abs/gr-qc/0403074
Applied to the electroweak interactions, the theory of Lie algebra extensions suggests a mechanism by which the boson masses are generated without resource to spontaneous symmetry breaking. It starts from a gauge theory without any additional scalar
Externí odkaz:
http://arxiv.org/abs/hep-th/0207095
Publikováno v:
Phys.Rev. D64 (2001) 027502
A new expression for the spin connection of teleparallel gravity is proposed, given by minus the contorsion tensor plus a zero connection. The corresponding minimal coupling is covariant under local Lorentz transformation, and equivalent to the minim
Externí odkaz:
http://arxiv.org/abs/gr-qc/0104102
Publikováno v:
Phys.Rev. D67 (2003) 123509
We investigate the nature of ordinary cosmic vortices in some scalar-tensor extensions of gravity. We find solutions for which the dilaton field condenses inside the vortex core. These solutions can be interpreted as raising the degeneracy between th
Externí odkaz:
http://arxiv.org/abs/gr-qc/0101039