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https://hdl.handle.net/1822/45770
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Campo DC | Valor | Idioma |
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dc.contributor.author | Ramos, M. P. Machado | por |
dc.date.accessioned | 2017-05-29T13:59:31Z | - |
dc.date.issued | 2017-04 | - |
dc.identifier.citation | Ramos M. P. M., "Characterizing the curvature and its first derivative", Gen. Relativ. Gravit., Vol. 49, 4, 60-78, (2017) | por |
dc.identifier.issn | 0001-7701 | por |
dc.identifier.uri | https://hdl.handle.net/1822/45770 | - |
dc.description.abstract | The curvature tensor and its derivatives up to any order can be covariantly characterized by a minimal set of spinor quantities. On the other hand it might be useful, particularly in cosmology, to describe the geometry of a spacetime in a (1+3) formalism, based on an invariantly defined fluid velocity. In this work, we consider an imperfect fluid possessing both isotropic and anisotropic pressure. For these fluids, we determine the (1+3) matter terms of the curvature as well as the parts of the first order covariant derivative of the curvature (∇R) determined pointwise by the matter via the Bianchi identities. Explicit relations between the set of such terms obtained from the (1+3) and spinor decomposition of ∇R are given. We show that in both sets there are 36 independent terms. | por |
dc.language.iso | eng | por |
dc.publisher | Springer Verlag | por |
dc.rights | restrictedAccess | por |
dc.subject | (1+3) formalism | por |
dc.subject | Riemann tensor | por |
dc.subject | Spinors | por |
dc.subject | Imperfect fluids | por |
dc.title | Characterizing the curvature and its first derivative for imperfect fluids | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://link.springer.com/journal/10714 | por |
oaire.citationStartPage | 60 | por |
oaire.citationEndPage | 78 | por |
oaire.citationIssue | 4 | por |
oaire.citationTitle | General Relativity and Gravitation | por |
oaire.citationVolume | 49 | por |
dc.identifier.eissn | 1572-9532 | por |
dc.identifier.doi | 10.1007/s10714-017-2221-z | por |
dc.subject.fos | Ciências Naturais::Matemáticas | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | General Relativity and Gravitation | por |
Aparece nas coleções: | DMA - Artigos (Papers) |
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Article_GRG_Pi_2017.pdf Acesso restrito! | 434,41 kB | Adobe PDF | Ver/Abrir |