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相关论文: Teleparallel Version of the Levi-Civita Vacuum Sol…

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We study the energy and momentum of an isolated system in the tetrad theory of gravitation, starting from the most general Lagrangian quadratic in torsion, which involves four unknown parameters. When applied to the static spherically…

广义相对论与量子宇宙学 · 物理学 2009-10-30 Takeshi Shirafuji , Gamal G. L. Nashed

This paper is devoted to explore the energy-momentum of non-static plane symmetric spacetimes in the context of General Relativity and teleparallel theory of gravity. For this purpose, we use four prescriptions, namely, Einstein,…

广义相对论与量子宇宙学 · 物理学 2013-12-06 M. Jamil Amir , Sarfraz Ali , Tariq Ismaeel

The teleparallel version of Lewis-Papapetrou space-time is investigated. For this space-time the true discussion of the geometric and physical properties is given. We show that the value of space-like torsion-axial vector does not depend on…

广义相对论与量子宇宙学 · 物理学 2020-03-02 A. S. Alofi , Ragab M Gad

The main purpose of this paper is to explicitly verify the consistency of the energy-momentum and angular momentum tensor of the gravitational field established in the Hamiltonian structure of the Teleparallel Equivalent of General…

广义相对论与量子宇宙学 · 物理学 2015-06-25 A. A. Sousa , J. S. Moura , R. B. Pereira

We derive the gravitational energy-momentum pseudotensor $ \tau^{\sigma}_ {\phantom {\sigma} \lambda} $ in metric $ f\left (R \right) $ gravity and in teleparallel $ f\left (T\right) $ gravity. In the first case, $R$ is the Ricci curvature…

广义相对论与量子宇宙学 · 物理学 2018-12-05 Salvatore Capozziello , Maurizio Capriolo , Maria Transirico

In the context of teleparallel equivalent to General Relativity, we study energy and its relevant quantities for some well-known black hole solutions. For this purpose, we use the Hamiltonian approach which gives reasonable and interesting…

综合物理 · 物理学 2011-01-17 M. Sharif , Abdul Jawad

This work is devoted to analyze the energy of the Universe in the context of f(T) theories. Such theories are the analogous counterpart of the well known f(R) theories that, however, uses torsion instead of curvature. We obtain a general…

广义相对论与量子宇宙学 · 物理学 2013-12-05 S. C. Ulhoa , E. P. Spaniol

In this paper we work in the context of Teleparallelism Equivalent to General Relativity (TEGR) in order to construct the energy-momentum flux for G\"odel-type solutions of Einstein's equations. We use an stationary observer, which is…

广义相对论与量子宇宙学 · 物理学 2013-03-14 S. C. Ulhoa , A. F. Santos , R. G. G. Amorim

Using the fact that teleparallel gravity allows a separation between gravitation and inertia, explicit expressions for the gravitational and the inertial energy-momentum densities are obtained. It is shown that, like all other fields of…

广义相对论与量子宇宙学 · 物理学 2009-08-14 R. Aldrovandi , Tiago Gribl Lucas , J. G. Pereira

In general relativity (GR), the metric tensor of spacetime is essential since it represents the gravitational potential. In other gauge theories (such as electromagnetism), the so-called premetric approach succeeds in separating the purely…

广义相对论与量子宇宙学 · 物理学 2017-04-18 Yakov Itin , Friedrich W. Hehl , Yuri N. Obukhov

An exact charged axially symmetric solution of the coupled gravitational and electromagnetic fields in the teleparallel equivalent of Einstein theory is derived. It is characterized by three parameters ``$ $the gravitational mass $M$, the…

广义相对论与量子宇宙学 · 物理学 2010-10-27 Gamal G. L. Nashed

We continue to investigate the premetric teleparallel theory of gravity (TG) with the coframe (tetrad) as gravitational potential. We start from the field equations and a local and linear constitutive law. We create a Tonti diagram of TG in…

广义相对论与量子宇宙学 · 物理学 2018-11-12 Yakov Itin , Yuri N. Obukhov , Jens Boos , Friedrich W. Hehl

The teleparallel versions of the Einstein and the Landau-Lifshitz energy-momentum complexes of the gravitational field are obtained. By using these complexes, the total energy of the universe, which includes the energy of both the matter…

广义相对论与量子宇宙学 · 物理学 2009-11-10 T. Vargas Auccalla

General Relativity and its higher derivative extensions have symmetric teleparallel reformulations in terms of the non-metricity tensor within a torsion-free and flat geometry. These notes present a derivation of the exact propagator for…

广义相对论与量子宇宙学 · 物理学 2018-11-07 Aindriú Conroy , Tomi Koivisto

The energy-momentum tensor, which is coordinate independent, is used to calculate energy, momentum and angular-momentum of two different tetrad fields. Although, the two tetrad fields reproduce the same space-time their energies are…

广义相对论与量子宇宙学 · 物理学 2010-03-04 Gamal G. L. Nashed

We investigate the conservation law of energy-momentum in teleparallel gravity by using general Noether theorem. The energy-momentum current has also superpotential and is therefore identically conserved. The total energy-momentum, which…

广义相对论与量子宇宙学 · 物理学 2007-08-27 Yu-Xiao Liu , Zhen-Hua Zhao , Jie Yang , Yi-Shi Duan

An exact solution has an axial symmetry is obtained in the teleparallel theory of gravitation. The associated metric has the structure function G(xi)=1-xi^2-2mA(xi)^3. The cubic nature of the structure function can make calculations…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Gamal G. L. Nashed

The obstruction for the existence of an energy momentum tensor for the gravitational field is connected with differential-geometric features of the Riemannian manifold. It has not to be valid for alternative geometrical structures. In this…

广义相对论与量子宇宙学 · 物理学 2009-11-07 Yakov Itin

In a well-known paper arXiv:gr-qc/0003100 V.C. de Andrade, L. C. T. Guillen and J.G. Pereira defined a conserved gauge current, however they stated that: `` This is, we believe the farthest one can go in the direction of a tensorial…

广义相对论与量子宇宙学 · 物理学 2009-07-10 Mariano Hermida de La Rica

The fundamentals of the teleparallel equivalent of general relativity are presented, and its main properties described. In particular, the field equations, the definition of an energy--momentum density for the gravitational field, the…

广义相对论与量子宇宙学 · 物理学 2007-05-23 V. C. de Andrade , L. C. T. Guillen , J. G. Pereira