Planck 2018 results
Free Access

Fig. 23.

image

Limits on the tensor-to-scalar ratio, r0.002, as a function of nS in the ΛCDM model at 95% CL, from Planck alone (grey area), or including BICEP2/Keck data 2014 (red) and BAO (blue). Constraints assume negligible running of the inflationary consistency relation, and the lines show the predictions of a number of models as a function of the number of e-folds, N, until the end of inflation. This can be compared with the middle panel in the top row of Fig. 14, which gives a temporal perspective.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.