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The age of the universe in Cardassian models

dc.contributor.authorSavage, Chrisen_US
dc.contributor.authorSugiyama, Noriyukien_US
dc.contributor.authorFreese, Katherineen_US
dc.date.accessioned2006-12-19T19:05:02Z
dc.date.available2006-12-19T19:05:02Z
dc.date.issued2005-10-01en_US
dc.identifier.citationSavage, Chris; Sugiyama, Noriyuki; Freese, Katherine (2005). "The age of the universe in Cardassian models." Journal of Cosmology and Astroparticle Physics. 10(007). <http://hdl.handle.net/2027.42/48987>en_US
dc.identifier.issn1475-7516en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/48987
dc.description.abstractThe age of the universe is obtained in a subset of Cardassian models by using WMAP data. Cardassian expansion is a modification to the Friedmann equation that allows the universe to be flat, matter dominated, and accelerating, without a vacuum component. Since this model changes the evolution of the universe, we should not a priori expect the Cardassian age to be the same as the WMAP Friedmann derived result of 13.7 ± 0.2 Gyr. However, in the subset of Cardassian models that we consider, we discover that the age of the universe varies from 13.4 to 13.8 Gyr over the range of parameter space that we explore, a result close to that of the standard Λ cold dark matter model. The Hubble constant h, which may also vary in these models, likewise varies little from the Friedmann result.en_US
dc.format.extent3118 bytes
dc.format.extent754655 bytes
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherIOP Publishing Ltden_US
dc.titleThe age of the universe in Cardassian modelsen_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelPhysicsen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumMichigan Center for Theoretical Physics, Physics Department, University of Michigan, Ann Arbor, MI 48109, USAen_US
dc.contributor.affiliationumMichigan Center for Theoretical Physics, Physics Department, University of Michigan, Ann Arbor, MI 48109, USA ; Department of Physics, University of Wisconsin—Milwaukee, Milwaukee, WI 53211, USAen_US
dc.contributor.affiliationumMichigan Center for Theoretical Physics, Physics Department, University of Michigan, Ann Arbor, MI 48109, USAen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/48987/2/jcap5_10_007.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1088/1475-7516/2005/10/007en_US
dc.identifier.sourceJournal of Cosmology and Astroparticle Physics.en_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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