Zobrazeno 1 - 10
of 145
pro vyhledávání: '"da Rocha, P J"'
Publikováno v:
Phys. Lett. B 858 (2024) 139041
We address the issue of gravitational radiation in the context of the Bondi-Sachs space-time, and consider the expression for the gravitational energy of the radiation obtained in the realm of the teleparallel equivalent of general relativity (TEGR).
Externí odkaz:
http://arxiv.org/abs/2405.15499
Publikováno v:
Phys. Rev. D 109, 084079 (2024)
This article presents an analysis of regular rotating black hole solutions within the framework of Teleparallel Equivalent to General Relativity (TEGR). The study evaluates the total energy and derives an analytical expression for the irreducible mas
Externí odkaz:
http://arxiv.org/abs/2405.05475
Publikováno v:
Ann. Phys. (Berlin) 2023, 2300241
We review the concept and definitions of the energy-momentum and angular momentum of the gravitational field in the teleparallel equivalent of general relativity (TEGR). The importance of these definitions is justified by three major reasons. First,
Externí odkaz:
http://arxiv.org/abs/2306.03676
Publikováno v:
Universe, 2023, 9, 127
We write the Kerr-Schild tetrads in terms of the flat space-time tetrads and of a (1,1) tensor $S^\lambda_\mu$. This tensor can be considered as a projection operator, since it transforms (i) flat space-time tetrads into non-flat tetrads, and vice-ve
Externí odkaz:
http://arxiv.org/abs/2203.16252
Publikováno v:
JCAP07(2022)030
In this article, we consider the Alcubierre spacetime, such a spacetime describes a ``bubble'' that propagates with arbitrary global velocity. This setting allows movement at a speed greater than that of light. There are some known problems with this
Externí odkaz:
http://arxiv.org/abs/2201.05684
Publikováno v:
Eur. Phys. J. C (2021)81:67
We consider non-linear plane gravitational waves as propagating space-time defects, and construct the Burgers vector of the waves. In the context of classical continuum systems, the Burgers vector is a measure of the deformation of the medium, and at
Externí odkaz:
http://arxiv.org/abs/2101.10499
On the Quantization of Burgers Vector and Gravitational Energy in the Space-Time of a Conical Defect
Publikováno v:
Eur. Phys. J. C 80, 226 (2020)
A conical topological defect is the result of translational and/or rotational deformations of spacetime, in particular the Burgers vector describes the translational deformation. Such a configuration represents a discontinuity, that cannot be removed
Externí odkaz:
http://arxiv.org/abs/2003.07281
Publikováno v:
Phys. Rev. D 100, 024023 (2019)
Gyratonic plane fronted gravitational waves are exact solutions of Einstein's field equations, which correspond to gravitational waves that carry momentum and angular-momentum. Using the definitions of the Hamiltonian formulation of the Teleparallel
Externí odkaz:
http://arxiv.org/abs/1907.08270
Publikováno v:
Classical and Quantum Gravity vol. 37, 067003 (2020)
A brief discussion is made about the relevance of surface terms in the Lagrangian and Hamiltonian formulations of theories of gravity. These surface terms play an important role in the variation of the action integral and in the definition of field q
Externí odkaz:
http://arxiv.org/abs/1811.06876
Publikováno v:
JCAP03(2019)028
A non-linear gravitational wave imparts gravitational acceleration to all particles that are hit by the wave. We evaluate this acceleration for particles in the pp-wave space-times, and integrate it numerically along the geodesic trajectories of the
Externí odkaz:
http://arxiv.org/abs/1808.09589