Planck 2013 results
Free Access

Fig. 2


Marginalized joint 68% and 95% CL for (dns/ dlnk,ns) using Planck+WP+BAO, either marginalizing over r or fixing r = 0 at k = 0.038 Mpc-1. The purple strip shows the prediction for single monomial chaotic inflationary models with 50 <N< 60 for comparison.

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