On the Curvature, Ricci, Einstein, and Weyl Tensors of the Defrise Universe Full article
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Siberian Mathematical Journal
ISSN: 0037-4466 , E-ISSN: 1573-9260 |
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| Output data | Year: 2025, Volume: 66, Number: 5, Pages: 1140–1148 Pages count : 9 DOI: 10.1134/S0037446625050040 | ||
| Tags | curvature tensor, Defrise Universe, Einstein tensor, energy-momentum tensor, left-invariant Lorentz metric, Lie algebra, Lie group, Petrov types, Ricci tensor, Weyl tensor | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Sobolev Institute of Mathematics | FWNF-2022-0006 |
Abstract:
We study the Defrise Universe with a negative cosmological constant. The curvature, Ricci,
Einstein, and Weyl tensors, as well as the matrices of covariant and contravariant energy-momentum
tensors, are calculated. It is proved that the condition of timelike convergence holds and that the weak
energy condition is violated. Using the Weyl tensor of conformal curvature, we establish that the Defrise
Universe has degenerate Petrov type II, type N.
Cite:
Berestovskii V.N.
On the Curvature, Ricci, Einstein, and Weyl Tensors of the Defrise Universe
Siberian Mathematical Journal. 2025. V.66. N5. P.1140–1148. DOI: 10.1134/S0037446625050040 РИНЦ
On the Curvature, Ricci, Einstein, and Weyl Tensors of the Defrise Universe
Siberian Mathematical Journal. 2025. V.66. N5. P.1140–1148. DOI: 10.1134/S0037446625050040 РИНЦ
Original:
Берестовский В.Н.
О тензорах кривизны, Риччи, Эйнштейна и Вейля Вселенной Дефриза
Сибирский математический журнал. 2025. Т.66. №5. С.818-827. DOI: 10.33048/smzh.2025.66.504
О тензорах кривизны, Риччи, Эйнштейна и Вейля Вселенной Дефриза
Сибирский математический журнал. 2025. Т.66. №5. С.818-827. DOI: 10.33048/smzh.2025.66.504
Dates:
| Submitted: | Mar 12, 2025 |
| Accepted: | May 26, 2025 |
| Published print: | Sep 30, 2025 |
| Published online: | Sep 30, 2025 |
Identifiers:
| Elibrary: | 82944327 |
Citing:
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