Matches in SemOpenAlex for { <https://semopenalex.org/work/W2020135118> ?p ?o ?g. }
- W2020135118 endingPage "2561" @default.
- W2020135118 startingPage "2547" @default.
- W2020135118 abstract "We show that the description of the space-time of general relativity as a diagonal four dimensional submanifold immersed in an eight dimensional hypercomplex manifold, in torsionless case, leads to a geometrical origin of the cosmological constant. The cosmological constant appears naturally in the new field equations and its expression is given as the norm of a four-vector U, i.e., Λ = 6g μν U μ U ν and where U can be determined from the Bianchi identities. Consequently, the cosmological constant is space-time dependent, a Lorentz invariant scalar, and may be positive, negative or null. The resulting energy momentum tensor of the dark energy depends on the cosmological constant and its first derivative with respect to the metric. As an application, we obtain the spherical solution for the field equations. In cosmology, the modified Friedmann equations are proposed and a condition on Λ for an accelerating universe is deduced. For a particular case of the vector U, we find a decaying cosmological constant $${Lambdapropto a(t)^{-6alpha}}$$ ." @default.
- W2020135118 created "2016-06-24" @default.
- W2020135118 creator A5029693749 @default.
- W2020135118 creator A5084611904 @default.
- W2020135118 date "2012-07-19" @default.
- W2020135118 modified "2023-09-27" @default.
- W2020135118 title "Geometrical origin of the cosmological constant" @default.
- W2020135118 cites W1853767801 @default.
- W2020135118 cites W1922269314 @default.
- W2020135118 cites W1955113783 @default.
- W2020135118 cites W1980618554 @default.
- W2020135118 cites W1987129895 @default.
- W2020135118 cites W1991803171 @default.
- W2020135118 cites W1992986221 @default.
- W2020135118 cites W1997824414 @default.
- W2020135118 cites W2003686608 @default.
- W2020135118 cites W2006120761 @default.
- W2020135118 cites W2032212922 @default.
- W2020135118 cites W2039334464 @default.
- W2020135118 cites W2050062115 @default.
- W2020135118 cites W2050715126 @default.
- W2020135118 cites W2053662157 @default.
- W2020135118 cites W2053901519 @default.
- W2020135118 cites W2056173066 @default.
- W2020135118 cites W2056802681 @default.
- W2020135118 cites W2071791665 @default.
- W2020135118 cites W2073603601 @default.
- W2020135118 cites W2073832139 @default.
- W2020135118 cites W2073919823 @default.
- W2020135118 cites W2075884494 @default.
- W2020135118 cites W2081000814 @default.
- W2020135118 cites W2082999913 @default.
- W2020135118 cites W2083775603 @default.
- W2020135118 cites W2084999694 @default.
- W2020135118 cites W2092839808 @default.
- W2020135118 cites W2104647479 @default.
- W2020135118 cites W2114014199 @default.
- W2020135118 cites W2134251287 @default.
- W2020135118 cites W2139440433 @default.
- W2020135118 cites W2159023825 @default.
- W2020135118 cites W2592174242 @default.
- W2020135118 cites W2896002780 @default.
- W2020135118 cites W2949764867 @default.
- W2020135118 cites W3098371892 @default.
- W2020135118 cites W3099350144 @default.
- W2020135118 cites W3101688198 @default.
- W2020135118 cites W3103484047 @default.
- W2020135118 cites W3103627955 @default.
- W2020135118 cites W3105512973 @default.
- W2020135118 cites W4241054132 @default.
- W2020135118 doi "https://doi.org/10.1007/s10714-012-1413-9" @default.
- W2020135118 hasPublicationYear "2012" @default.
- W2020135118 type Work @default.
- W2020135118 sameAs 2020135118 @default.
- W2020135118 citedByCount "7" @default.
- W2020135118 countsByYear W20201351182015 @default.
- W2020135118 countsByYear W20201351182016 @default.
- W2020135118 countsByYear W20201351182018 @default.
- W2020135118 countsByYear W20201351182023 @default.
- W2020135118 crossrefType "journal-article" @default.
- W2020135118 hasAuthorship W2020135118A5029693749 @default.
- W2020135118 hasAuthorship W2020135118A5084611904 @default.
- W2020135118 hasBestOaLocation W20201351182 @default.
- W2020135118 hasConcept C118534291 @default.
- W2020135118 hasConcept C121332964 @default.
- W2020135118 hasConcept C166861157 @default.
- W2020135118 hasConcept C172790937 @default.
- W2020135118 hasConcept C20154449 @default.
- W2020135118 hasConcept C26405456 @default.
- W2020135118 hasConcept C36429004 @default.
- W2020135118 hasConcept C37914503 @default.
- W2020135118 hasConcept C62520636 @default.
- W2020135118 hasConcept C74650414 @default.
- W2020135118 hasConcept C85405196 @default.
- W2020135118 hasConceptScore W2020135118C118534291 @default.
- W2020135118 hasConceptScore W2020135118C121332964 @default.
- W2020135118 hasConceptScore W2020135118C166861157 @default.
- W2020135118 hasConceptScore W2020135118C172790937 @default.
- W2020135118 hasConceptScore W2020135118C20154449 @default.
- W2020135118 hasConceptScore W2020135118C26405456 @default.
- W2020135118 hasConceptScore W2020135118C36429004 @default.
- W2020135118 hasConceptScore W2020135118C37914503 @default.
- W2020135118 hasConceptScore W2020135118C62520636 @default.
- W2020135118 hasConceptScore W2020135118C74650414 @default.
- W2020135118 hasConceptScore W2020135118C85405196 @default.
- W2020135118 hasIssue "10" @default.
- W2020135118 hasLocation W20201351181 @default.
- W2020135118 hasLocation W20201351182 @default.
- W2020135118 hasLocation W20201351183 @default.
- W2020135118 hasOpenAccess W2020135118 @default.
- W2020135118 hasPrimaryLocation W20201351181 @default.
- W2020135118 hasRelatedWork W1592690426 @default.
- W2020135118 hasRelatedWork W2013022446 @default.
- W2020135118 hasRelatedWork W2025565066 @default.
- W2020135118 hasRelatedWork W2032996394 @default.
- W2020135118 hasRelatedWork W2036707470 @default.
- W2020135118 hasRelatedWork W2097549518 @default.
- W2020135118 hasRelatedWork W2100078491 @default.