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Integrability of ir...
Integrability of irrotational silent cosmological models
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- van Elst, Henk (författare)
- Astronomy Unit, Queen Mary and Westfield College, University of London
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- Uggla, Claes (författare)
- Luleå tekniska universitet
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- Lesame, William S. (författare)
- Department of Applied Mathematics, University of Fort Hare
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- Ellis, George F.R. (författare)
- Department of Applied Mathematics, University of Cape Town
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- Maartens, Roy (författare)
- School of Mathematical Studies, Portsmouth University
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(creator_code:org_t)
- 1999-01-01
- 1997
- Svenska.
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Ingår i: Classical and quantum gravity. - : IOP Publishing. - 0264-9381 .- 1361-6382. ; 14:5, s. 1151-1162
- Relaterad länk:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We revisit the issue of integrability conditions for the irrolational silent cosmological models. We formulate the problem both in 1 + 3 covariant and 1 + 3 orthonormal frame notation and show that there exists a series of constraint equations that need to be satisfied. These conditions hold identically for FLRW-linearized silent models, but not in the general exact nonlinear case. Thus there is a linearization instability and it is highly unlikely that there is a large class of silent models We conjecture that there are no spatially inhomogeneous solutions with Weyl curvature of Petrov type I and indicate further issues that await clarification.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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