What do very nearly flat detectable cosmic topologies Rook like?

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dc.contributor.authorMota, B.
dc.contributor.authorGomero, G. I.
dc.contributor.authorReboucas, M. J.
dc.contributor.authorTavakol, R.
dc.contributor.institutionCentro Brasileiro de Pesquisas Físicas (CBPF)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv London
dc.date.accessioned2014-05-20T14:07:00Z
dc.date.available2014-05-20T14:07:00Z
dc.date.issued2004-07-21
dc.description.abstractRecent studies of the delectability of the cosmic topology of nearly flat universes have often concentrated on the range of values of Omega(0) given by current observations. Here we study the consequences of taking a range of bounds satisfying \Omega(0) - 1\ much less than 1, which include those expected from future observations such as the Planck mission, as well as those predicted by inflationary models. We show that in this limit, a generic detectable non-flat manifold is locally indistinguishable from either a cylindrical (R-2 X S) or toroidal (R x T-2) manifold, irrespective of its global shape, with the former being more likely. Importantly, this is compatible with some recent indications of the alignment of the quadrupole and octupole moments, based on the analysis of the first year WMAP data. It also implies that in this limit an observer would not be able to distinguish topologically whether the universe is spherical, hyperbolic or flat. By severely restricting the expected topological signatures of detectable isometries, our results provide an effective theoretical framework for interpreting cosmological observations, and can be used to confine the parameter spaces which realistic search strategies, such as the 'circles in the sky' method, need to concentrate on.en
dc.description.affiliationCtr Brasileiro Pesquisas Fis, BR-22290180 Rio de Janeiro, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.affiliationUniv London, Astron Unit, Sch Math Sci, London E1 4NS, England
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.format.extent3361-3368
dc.identifierhttp://dx.doi.org/10.1088/0264-9381/21/14/002
dc.identifier.citationClassical and Quantum Gravity. Bristol: Iop Publishing Ltd, v. 21, n. 14, p. 3361-3368, 2004.
dc.identifier.doi10.1088/0264-9381/21/14/002
dc.identifier.issn0264-9381
dc.identifier.urihttp://hdl.handle.net/11449/23531
dc.identifier.wosWOS:000223146300004
dc.language.isoeng
dc.publisherIop Publishing Ltd
dc.relation.ispartofClassical and Quantum Gravity
dc.relation.ispartofjcr3.283
dc.relation.ispartofsjr1,809
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleWhat do very nearly flat detectable cosmic topologies Rook like?en
dc.typeArtigo
dcterms.licensehttp://iopscience.iop.org/page/copyright
dcterms.rightsHolderIop Publishing Ltd
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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