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Title: Planck constraints on monodromy inflation

We use data from the nominal Planck mission to constrain modulations in the primordial power spectrum associated with monodromy inflation. The largest improvement in fit relative to the unmodulated model has Δχ{sup 2} ≈ 10 and we find no evidence for a primordial signal, in contrast to a previous analysis of the WMAP9 dataset, for which Δχ{sup 2} ≈ 20. The Planck and WMAP9 results are broadly consistent on angular scales where they are expected to agree as far as best-fit values are concerned. However, even on these scales the significance of the signal is reduced in Planck relative to WMAP, and is consistent with a fit to the ''noise'' associated with cosmic variance. Our results motivate both a detailed comparison between the two experiments and a more careful study of the theoretical predictions of monodromy inflation.
Authors:
 [1] ;  [2]
  1. Department of Physics, University of Auckland, Private Bag, Auckland, 92019 New Zealand (New Zealand)
  2. School of Natural Sciences, Institute for Advanced Study, Einstein Drive, Princeton, NJ, 08540 (United States)
Publication Date:
OSTI Identifier:
22370686
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 02; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DATASETS; FORECASTING; LIMITING VALUES; MODULATION; NOISE; SIGNALS; SPECTRA COSMOLOGICAL INFLATION