Latest inflation model constraints from cosmic microwave background measurements

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dc.creatorKinney, William H.
dc.creatorKolb, Edward W.
dc.creatorMelchiorri, Alessandro
dc.creatorRiotto, Antonio
dc.date2008-05-19
dc.date2008-09-26
dc.date.accessioned2026-07-07T11:50:56Z
dc.date.available2026-07-07T11:50:56Z
dc.descriptionIn this addendum to Phys.Rev. D74 (2006) 023502, we present an update of cosmological constraints on single-field inflation in light of the Wilkinson Microwave Ansiotropy Probe satellite mission five-year results (WMAP5). We find that the cosmic microwave background data are quite consistent with a Harrison-Zel'dovich primordial spectrum with no running and zero tensor amplitude. We find that the three main conclusions of our analysis of the WMAP three-year data (WMAP3) are consistent with the WMAP5 data: (1) the Harrison--Zel'dovich model is within the 95% confidence level contours; (2) there is no evidence for running of the spectral index of scalar perturbations; (3) From the WMAP 5 data alone, potentials of the form $V \propto ϕ^p$ are consistent with the data for $p = 2$, and are ruled out for $p = 4$. Furthermore, consistent with our WMAP3 analysis, we find no evidence for primordial tensor perturbations, this time with a 95% confidence upper limit of $r < 0.4$ for the WMAP5 data alone, and $r < 0.35$ for the WMAP5 data taken in combination with the Arcminute Cosmology Bolometer Array (ACBAR).
dc.description8 pages, 4 figures. V2: matches version accepted by PRD
dc.identifierhttps://arxiv.org/abs/0805.2966
dc.identifierhttp://arxiv.org/abs/0805.2966
dc.identifierPhys.Rev.D78:087302,2008
dc.identifierdoi:10.1103/PhysRevD.78.087302
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203725
dc.subjectAstrophysics
dc.titleLatest inflation model constraints from cosmic microwave background measurements
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