Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Toporensky, A. V."'
Autor:
Toporensky, A. V., Zaslavskii, O. B.
We consider near-horizon collisions between two particles moving freely in the Schwarzschild metric in the region outside the horizon. One of them emerges from a white hole. We scrutiny when such a process can lead to the indefinitely large growth of
Externí odkaz:
http://arxiv.org/abs/2411.01989
We study the energy-momentum characteristics of the rotating black hole - Kerr solution of general relativity in the Teleparallel Equivalent of General Relativity (TEGR) and the Symmetric Teleparallel Equivalent of General Relativity (STEGR). The pre
Externí odkaz:
http://arxiv.org/abs/2409.10529
Publikováno v:
JCAP 09 (2024) 050
We propose new slow-roll approximations for inflationary models with the Gauss-Bonnet term. We find more accurate expressions of the standard slow-roll parameters as functions of the scalar field. To check the accuracy of approximations considered we
Externí odkaz:
http://arxiv.org/abs/2403.06147
Publikováno v:
The European Physical Journal C, Volume 84, article number 215, (2024)
We study the energy-momentum characteristics of the plane ``+''-polarised gravitational wave solution of general relativity in the Teleparallel Equivalent of General Relativity (TEGR) and the Symmetric Teleparallel Equivalent of General Relativity (S
Externí odkaz:
http://arxiv.org/abs/2310.15322
Publikováno v:
European Journal of Physics C 83(2023)650
The problem of the speed of the objects inside the Schwarzschild black hole is considered. The general result is that the value of the relative speed of the objects following their non-zero angular momentum trajectories, both of geodesic and non-geod
Externí odkaz:
http://arxiv.org/abs/2301.11651
Publikováno v:
Eur. Phys. J. C (2023) 83:366
We derive conservation laws in Symmetric Teleparallel Equivalent of General Relativity (STEGR) with direct application of Noether's theorem. This approach allows us to construct covariant conserved currents, corresponding superpotentials and invarian
Externí odkaz:
http://arxiv.org/abs/2212.03755
Autor:
Toporensky, A. V., Popov, S. B.
In this note, we present a pedagogical illustration of peculiar properties of motion in the vicinity and inside black holes. We discuss how a momentary impulse can modify the lifetime of an object radially falling into a Schwarzschild black hole down
Externí odkaz:
http://arxiv.org/abs/2209.04823
Autor:
Toporensky, A. V., Zaslavskii, O. B.
Publikováno v:
Symmetry, 14, 40 (2022)
We consider a space-time of a spherically symmetric black hole with one simple horizon. As a standard coordinate frame fails in its vicinity, this requires continuation across the horizon and constructing frames which are regular there. Up to now, se
Externí odkaz:
http://arxiv.org/abs/2111.09530
Publikováno v:
Int.J.Geom.Meth.Mod.Phys. 19 (2022) 10, 2250147
In this paper we generalize our previous results on spin connection for the linear scalar cosmological perturbation in $f(T)$ theory to wider class of theories which includes a scalar field $\Phi$ non-minimally coupled to torsion, and allows $\Phi$-d
Externí odkaz:
http://arxiv.org/abs/2110.12332
Publikováno v:
Eur. Phys. J. C 81 (2021) 743
We examine various methods of constructing conserved quantities in the Teleparallel Equivalent of General Relativity (TEGR). We demonstrate that in the covariant formulation the preferred method are the Noether charges that are true invariant quantit
Externí odkaz:
http://arxiv.org/abs/2105.13312