The Observational Status of Cosmic Inflation after Planck
  The observational status of inflation after the Planck 2013 and 2015 results
and the BICEP2/Keck Array and Planck joint analysis is discussed. These
pedagogical lecture notes are intended to serve as a technical guide filling
the gap between the theoretical articles on inflation and the experimental
works on astrophysical and cosmological data. After a short discussion of the
central tenets at the basis of inflation (negative self-gravitating pressure)
and its experimental verifications, it reviews how the most recent Cosmic
Microwave Background (CMB) anisotropy measurements constrain cosmic inflation.
The fact that vanilla inflationary models are, so far, preferred by the
observations is discussed and the reason why plateau-like potential versions of
inflation are favored within this subclass of scenarios is explained. Finally,
how well the future measurements, in particular of $B$-Mode CMB polarization or
primordial gravity waves, will help to improve our knowledge about inflation is
also investigated.
