Cosmological term and fundamental physics

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dc.contributor.authorAldrovandi, R.
dc.contributor.authorAlmeida, JPBN
dc.contributor.authorPereira, J. G.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:06:42Z
dc.date.available2014-05-20T14:06:42Z
dc.date.issued2004-12-01
dc.description.abstractA nonvanishing cosmological term in Einstein's equations implies a nonvanishing spacetime curvature even in the absence of any kind of matter. It would, in consequence, affect many of the underlying kinematic tenets of physical theory. The usual commutative spacetime translations of the Poincare group would be replaced by the mixed conformal translations of the de Sitter group, leading to obvious alterations in elementary concepts such as time, energy and momentum. Although negligible at small scales, such modifications may come to have important consequences both in the large and for the inflationary picture of the early Universe. A qualitative discussion is presented, which suggests deep changes in Hamiltonian, Quantum and Statistical Mechanics. In the primeval universe as described by the standard cosmological model, in particular, the equations of state of the matter sources could be quite different from those usually introduced.en
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.format.extent2241-2248
dc.identifierhttp://dx.doi.org/10.1142/S0218271804006279
dc.identifier.citationInternational Journal of Modern Physics D. Singapore: World Scientific Publ Co Pte Ltd, v. 13, n. 10, p. 2241-2248, 2004.
dc.identifier.doi10.1142/S0218271804006279
dc.identifier.issn0218-2718
dc.identifier.lattes1599966126072450
dc.identifier.urihttp://hdl.handle.net/11449/23423
dc.identifier.wosWOS:000227504500011
dc.language.isoeng
dc.publisherWorld Scientific Publ Co Pte Ltd
dc.relation.ispartofInternational Journal of Modern Physics D
dc.relation.ispartofjcr2.171
dc.relation.ispartofsjr1,079
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectcosmological constantpt
dc.subjectde Sitter kinematicspt
dc.subjectearly universept
dc.titleCosmological term and fundamental physicsen
dc.typeArtigo
dcterms.licensehttp://www.worldscientific.com/page/authors/author-rights
dcterms.rightsHolderWorld Scientific Publ Co Pte Ltd
unesp.author.lattes1599966126072450
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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