Can we avoid dark energy?

Simple item page
dc.creatorZibin, J. P.
dc.creatorMoss, A.
dc.creatorScott, D.
dc.date2008-09-22
dc.date2008-12-22
dc.date.accessioned2026-07-07T12:32:22Z
dc.date.available2026-07-07T12:32:22Z
dc.descriptionThe idea that we live near the centre of a large, nonlinear void has attracted attention recently as an alternative to dark energy or modified gravity. We show that an appropriate void profile can fit both the latest cosmic microwave background and supernova data. However, this requires either a fine-tuned primordial spectrum or a Hubble rate so low as to rule these models out. We also show that measurements of the radial baryon acoustic scale can provide very strong constraints. Our results present a serious challenge to void models of acceleration.
dc.description5 pages, 4 figures; minor changes; version published in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/0809.3761
dc.identifierhttp://arxiv.org/abs/0809.3761
dc.identifierPhys.Rev.Lett.101:251303,2008
dc.identifierdoi:10.1103/PhysRevLett.101.251303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216758
dc.subjectAstrophysics
dc.titleCan we avoid dark energy?
dc.typetext

Files

Collections

arXiv