Primeval symmetries

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorAldrovandi, R.
dc.creatorCuzinatto, R. R.
dc.creatorMedeiros, L. G.
dc.date2014-05-20T14:07:59Z
dc.date2016-10-25T17:13:38Z
dc.date2014-05-20T14:07:59Z
dc.date2016-10-25T17:13:38Z
dc.date2007-11-01
dc.date.accessioned2017-04-05T21:43:51Z
dc.date.available2017-04-05T21:43:51Z
dc.identifierGeneral Relativity and Gravitation. New York: Springer/plenum Publishers, v. 39, n. 11, p. 1813-1832, 2007.
dc.identifier0001-7701
dc.identifierhttp://hdl.handle.net/11449/23843
dc.identifierhttp://acervodigital.unesp.br/handle/11449/23843
dc.identifier10.1007/s10714-007-0490-7
dc.identifierWOS:000250205700005
dc.identifierhttp://dx.doi.org/10.1007/s10714-007-0490-7
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/868881
dc.descriptionA detailed examination of the Killing equations in Robertson-Walker coordinates shows how the addition of matter and/or radiation to a de Sitter Universe breaks the symmetry generated by four of its Killing fields. The product U = a(2) H of the squared scale parameter by the time-derivative of the Hubble function encapsulates the relationship between the two cases: the symmetry is maximal when U is a constant, and reduces to the six-parameter symmetry of a generic Friedmann-Robertson-Walker model when it is not. As the fields physical interpretation is not clear in these coordinates, comparison is made with the Killing fields in static coordinates, whose interpretation is made clearer by their direct relationship to the Poincare group generators via Wigner-Inonu contractions.
dc.languageeng
dc.publisherSpringer
dc.relationGeneral Relativity and Gravitation
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectkilling fields
dc.subjectstandard model
dc.subjectde Sitter model
dc.titlePrimeval symmetries
dc.typeOtro


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