WMAP and Inflation

Details WMAP and Inflation WMAP and Inflation

2003-02-18

arxiv.org/abs/hep-ph/0302150v4

Phys.Lett.B565:33-41,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 figures. Version to appear in PLB

Scientific paper

10.1016/S0370-2693(03)00757-3

We assay how inflationary models whose properties are dominated by the dynamics of a single scalar field are constrained by cosmic microwave background (CMB) data from the Wilkinson Microwave Anisotropy Probe (WMAP). We classify inflationary models in a plane defined by the horizon-flow parameters. Our approach differs from that of the WMAP collaboration in that we analyze only WMAP data and take the spectral shapes from slow-roll inflation rather than power-law parameterizations of the spectra. The only other information we use is the measurement of $h$ from the Hubble Space Telescope (HST) Key Project. We find that the spectral index of primordial density perturbations lies in the 1\sigma range 0.94

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