Observational constraints on modified gravity models and the Poincaré dodecahedral topology

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dc.creatorBento, M. C.
dc.creatorBertolami, O.
dc.creatorRebouças, M. J.
dc.creatorSantos, N. M. C.
dc.date2006-03-31
dc.date2006-05-30
dc.date.accessioned2026-07-07T10:28:02Z
dc.date.available2026-07-07T10:28:02Z
dc.descriptionWe study the constraints that spatial topology may place on the parameters of models that account for the accelerated expansion of the universe via infrared modifications to general relativity, namely the Dvali-Gabadadze-Porrati braneworld model as well as the Dvali-Turner and Cardassian models. By considering the Poincaré dodecahedral space as the circles-in-the-sky observable spatial topology, we examine the constraints that can be placed on the parameters of each model using type Ia supernovae data together with the baryon acoustic peak in the large scale correlation function of the Sloan Digital Sky Survey of luminous red galaxies and the Cosmic Microwave Background Radiation shift parameter data. We show that knowledge of spatial topology does provide relevant constraints, particularly on the curvature parameter, for all models.
dc.descriptionRevtex4, 10 pages, 1 table, 12 figures; version to match the one to be published in Physical Review D
dc.identifierhttps://arxiv.org/abs/astro-ph/0603848
dc.identifierhttp://arxiv.org/abs/astro-ph/0603848
dc.identifierPhys.Rev.D73:103521,2006
dc.identifierdoi:10.1103/PhysRevD.73.103521
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177313
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleObservational constraints on modified gravity models and the Poincaré dodecahedral topology
dc.typetext

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