Zobrazeno 1 - 10
of 254
pro vyhledávání: '"Ulhoa, S. C."'
This study delves into the fundamental properties of graphene and boron nitride (BN) nanostructures, exploring their torsional energy characteristics within the framework of Teleparallel Equivalent of General Relativity (TEGR). By constructing nanoco
Externí odkaz:
http://arxiv.org/abs/2406.05544
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:
Rev. Bras. Ensino Fis. v.46, p.e20240043, 2024
This article explores the differences between frame and coordinate transformations in relativistic theories. We highlight the key role of tetrad fields in connecting spacetime and frame indices. Using Maxwell's electrodynamics as an example, we show
Externí odkaz:
http://arxiv.org/abs/2405.03623
This article deals with the thermodynamics of gravitational radiation arising from the Bondi-Sachs space-time. The equation of state found allows us to conclude that the dependence of the energy density on the temperature is a quadratic power of the
Externí odkaz:
http://arxiv.org/abs/2308.05084
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
The gravitational Stefan-Boltzmann law is considered for the Kerr black hole in the weak-field limit. The energy-momentum tensor predicted by Teleparallelism Equivalent to General Relativity (TEGR) is used in the Thermo Field Dynamics (TFD) formalism
Externí odkaz:
http://arxiv.org/abs/2306.02950
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:
Gravit. Cosmol. 28 (2022) 352-361
We consider the C-metric as a gravitational field configuration that describes an accelerating black hole in the presence of a semi-infinite cosmic string, along the accelerating direction. We adopt the expression for the gravitational energy-momentu
Externí odkaz:
http://arxiv.org/abs/2107.09806