Bianchi identities and the automatic conservation of energy-momentum and angular momentum in general-relativistic field theories
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If our universe was formed in a black hole, then it must have increased its entropy and isotropized in the past to match the currently observed FLRW universe.
“If our universe was formed in a black hole, then it must have increased its entropy [5,33,34] and isotropized in the past to match the currently observed FLRW universe [35].”
From A nonsingular, anisotropic universe in a black hole with torsion and particle production (2021) · cites this paper as [35]
The conservation law for total angular momentum in curved spacetime, which allows exchange between orbital and intrinsic components, requires an asymmetric affine connection.
“The conservation law for the total angular momentum (orbital plus intrinsic) that admits the exchange between its orbital and intrinsic components (spin-orbit interaction) in curved spacetime requires an asymmetric affine connection (Hehl & McCrea 1986;Hammond 2010;Popławski 2013a).”
From UNIVERSE IN A BLACK HOLE IN EINSTEIN–CARTAN GRAVITY (2016) · cites this paper as Hehl & McCrea 1986
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UNIVERSE IN A BLACK HOLE IN EINSTEIN–CARTAN GRAVITY
Popławski, N. (2016) · The Astrophysical Journal · doi:10.3847/0004-637x/832/2/96 · Cited by 91 · see citing works
A nonsingular, anisotropic universe in a black hole with torsion and particle production
Popławski, N. J. (2021) · General Relativity and Gravitation · doi:10.1007/s10714-021-02790-7 · Cited by 12 · see citing works
- Authors
- Hehl, F. W., & McCrea, J. D.
- Affiliations
- University College Dublin (IE)
- ORCID
- Hehl, Friedrich W.
- Venue
- Foundations of Physics
- Published
- 1986-03
- Volume
- 16
- Issue
- 3
- Pages
- 267-293
- ISSN
- 0015-9018 (ISSN-L)
- 1572-9516
- OpenAlex
- W2027957972
- Cited by
- 75
- References
- 0
- Citations by year
- 2024: 1 · 2023: 1 · 2021: 2 · 2020: 5 · 2019: 3 · 2018: 3 · 2017: 2 · 2016: 3 · 2015: 1 · 2013: 1 · 2012: 2
- FWCI
- 3.64
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Foundations of Physics (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Advanced Differential Geometry Research
- Keywords
- Bianchi identities, energy-momentum conservation, angular momentum conservation, Riemann-Cartan spacetime, torsion, Einstein-Cartan theory, cosmological constant, Poincaré gauge theory, general relativity, irreducible decomposition, field equations
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
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