CMB polarization features from inflation versus reionization

@inproceedings{Mortonson2009CMBPF,
  title={CMB polarization features from inflation versus reionization},
  author={Michael J. Mortonson and Cora Dvorkin and Hiranya V. Peiris and Wayne Hu Kicp and University of Chicago and University of Cambridge},
  year={2009}
}
The angular power spectrum of the cosmic microwave background temperature anisotropy observed by WMAP has an anomalous dip at l{approx}20 and a bump at l{approx}40. One explanation for this structure is the presence of features in the primordial curvature power spectrum, possibly caused by a step in the inflationary potential. The detection of these features is only marginally significant from temperature data alone. However, the inflationary feature hypothesis predicts a specific shape for the… CONTINUE READING

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