Akrami, YasharArroja, FredericoAshdown, Mark A.J.2020-11-062020-11-062020Akrami, Y . et al . (2020). Planck 2018 results: X. Constraints on inflation. Astronomy and Astrophysics ,641,A10. Doi: https://doi.org/10.1051/0004-6361/201833887EDP Scienceshttp://hdl.handle.net/10566/5388We report on the implications for cosmic inflation of the 2018 release of the Planck cosmic microwave background (CMB) anisotropy measurements. The results are fully consistent with those reported using the data from the two previous Planck cosmological releases, but have smaller uncertainties thanks to improvements in the characterization of polarization at low and high multipoles. Planck temperature, polarization, and lensing data determine the spectral index of scalar perturbations to be ns = 0.9649 ± 0.0042 at 68% CL.enInflationCosmic background radiationAnisotropy measurementsPolarizationArticle