Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Pavluchenko, Sergey A."'
Autor:
Pavluchenko, Sergey
Publikováno v:
Universe 2024, 10(11), 429
In the current review, we provide a summary of the recent progress made in the cosmological aspect of extra-dimensional Lovelock gravity. Our review covers a wide variety of particular model/matter source combinations: Einstein--Gauss--Bonnet as well
Externí odkaz:
http://arxiv.org/abs/2412.00414
Autor:
Pavluchenko, Sergey A.
In this paper we perform systematic investigation of all possible exponential solutions in Einstein-Gauss-Bonnet gravity with the spatial section being a product of two subspaces. We describe a scheme which always allow to find solution for a given $
Externí odkaz:
http://arxiv.org/abs/2104.10423
Publikováno v:
Mod. Phys. Lett. A 36, 2150092 (2021)
We study some aspects of dynamical compactification scenario where stabilisation of extra dimensions occurs due to presence the Gauss-Bonnet term and non-zero spatial curvature. In the framework of the model under consideration there exists two-stage
Externí odkaz:
http://arxiv.org/abs/2101.12066
Publikováno v:
Eur. Phys. J. C 81, 136 (2021)
In this paper we perform systematic investigation of all possible solutions with static compact extra dimensions and expanding three-dimensional subspace (``our Universe''). Unlike previous papers, we consider extra-dimensional subspace to be constan
Externí odkaz:
http://arxiv.org/abs/2012.03517
Autor:
Pavluchenko, Sergey A.
Publikováno v:
Eur. Phys. J. C 79, 111 (2019)
In this paper we performed investigation of the spatially-flat cosmological models whose spatial section is product of three- ("our Universe") and extra-dimensional parts. The matter source chosen to be the perfect fluid which exists in the entire sp
Externí odkaz:
http://arxiv.org/abs/1810.00050
The current paper is addressing the possibility of the Dark Energy scalar field potential reconstruction from the SNe Ia data and the problems arising during the process. We describe the method and test its limits, stability of the reconstruction wit
Externí odkaz:
http://arxiv.org/abs/1809.07142
Autor:
Pavluchenko, Sergey A.
Publikováno v:
Eur. Phys. J. C 78, 611 (2018)
We investigate possible regimes in spatially flat vacuum cosmological models in cubic Lovelock gravity. The spatial section is a product of three- and extra-dimensional isotropic subspaces. This is the second paper of the series and we consider D=5 a
Externí odkaz:
http://arxiv.org/abs/1807.01601
Autor:
Pavluchenko, Sergey A.
Publikováno v:
Eur. Phys. J. C 78, 551 (2018)
In this paper we begin to perform systematical investigation of all possible regimes in spatially flat vacuum cosmological models in cubic Lovelock gravity. We consider the spatial section to be a product of three- and extra-dimensional isotropic sub
Externí odkaz:
http://arxiv.org/abs/1804.06934
Autor:
Pavluchenko, Sergey
Publikováno v:
Particles 1, 4 (2018)
We report the results of a study on the dynamical compactification of spatially flat cosmological models in Einstein-Gauss-Bonnet gravity. The analysis was performed in the arbitrary dimension in order to be more general. We consider both vacuum and
Externí odkaz:
http://arxiv.org/abs/1803.01887
Publikováno v:
Particles 1, 3 (2018)
In this paper we perform a reconstruction of the scalar field potential responsible for cosmic acceleration using SNe Ia data. After describing the method, we test it with real SNe Ia data-Union2.1 and JLA SNe datasets. We demonstrate that with the c
Externí odkaz:
http://arxiv.org/abs/1803.01879