Zobrazeno 1 - 10
of 2 009
pro vyhledávání: '"A Bronnikov"'
Autor:
Bronnikov, Kirill A., Bolokhov, Sergei V., Skvortsova, Milena V., Ibadov, Rustam, Shaymanova, Feruza Y.
Publikováno v:
Euro Phys. Journal C 84, 1027 (2024)
We study the behavior of static, spherically symmetric solutions to the field equations of scalar-tensor theories (STT) of gravity belonging to the Bergmann-Wagoner-Nordtvedt class, in the presence of an electric and/or magnetic charge. This class of
Externí odkaz:
http://arxiv.org/abs/2407.12144
Autor:
Chetverikova, A. P., Solodovchenko, N. S., Bochkarev, M. E., Bronnikov, K. A., Samusev, K. B., Limonov, M. F.
The creation of highly enhanced and localized electromagnetic fields in dielectric structures with low losses, that is, hot spot technology, is an important applied and fundamental problem. However, known examples are reduced to single hot spots gene
Externí odkaz:
http://arxiv.org/abs/2406.05721
Topological transformations of dielectric structures radically change the eigenvalues and eigenfunctions of photonic resonances. Moreover, optical effects may arise that characterize the moment of transition from one structure to another, but are not
Externí odkaz:
http://arxiv.org/abs/2406.02620
The widely discussed ``black-bounce'' mechanism of removing a singularity at $r=0$ in a spherically symmetric space-time, proposed by Simpson and Visser, consists in removing the point $r=0$ and its close neighborhood, resulting in emergence of a reg
Externí odkaz:
http://arxiv.org/abs/2405.09124
Autor:
Bronnikov, Kirill A.
The so-called black bounce mechanism of singularity suppression, proposed by Simpson and Visser, consists in replacing the spherical radius $r$ in the metric tensor with $\sqrt{r^2 + a^2}$, $a = \rm const >0$. This removes a singularity at $r=0$ and
Externí odkaz:
http://arxiv.org/abs/2404.14816
Autor:
Alencar, G., Bronnikov, Kirill A., Rodrigues, Manuel E., Gómez, Diego Sáez-Chillón, Silva, Marcos V. de S.
Publikováno v:
Eur. Phys. J. C (2024) 84:745
One of the main issues in gravitation is the presence of singularities in the most common space-time solutions of General Relativity, as the case of black holes. A way of constructing regular solutions that remove spacelike singularities consists in
Externí odkaz:
http://arxiv.org/abs/2403.12897
We discuss the heat history of the early Universe and its further evolution in the framework of modern cosmological models of general relativity (GR) and alternative theories of gravity. Of great importance are the new puzzling forms of matter compri
Externí odkaz:
http://arxiv.org/abs/2312.12883
Publikováno v:
Universe 9, 465 (2023)
We study the properties of evolving wormholes able to exist in a closed Friedmann dust-filled universe and described by a particular branch of the well-known Lema{\i}tre-Tolman-Bondi solution to the Einstein equations and its generalization with a no
Externí odkaz:
http://arxiv.org/abs/2309.03166
Autor:
Bronnikov, Kirill A., Bolokhov, Sergei V., Skvortsova, Milena V., Badalov, Kodir, Ibadov, Rustam
Publikováno v:
Grav. Cosmol. 29 (4), 374-386 (2023)
We study the linear stability of vacuum static, spherically symmetric solutions to the gravitational field equations of the Bergmann-Wagoner-Nordtvedt class of scalar-tensor theories (STT) of gravity, restricting ourselves to nonphantom theories, mas
Externí odkaz:
http://arxiv.org/abs/2309.01794
Autor:
Kirill A. Bronnikov, Sergei V. Bolokhov, Milena V. Skvortsova, Rustam Ibadov, Feruza Y. Shaymanova
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 10, Pp 1-20 (2024)
Abstract We study the behavior of static, spherically symmetric solutions to the field equations of scalar–tensor theories (STT) of gravity belonging to the Bergmann–Wagoner–Nordtvedt class, in the presence of an electric and/or magnetic charge
Externí odkaz:
https://doaj.org/article/e88c4fe8689e4e0cabaa75a29beee1c0
