Description
We investigate a non-parametric Bayesian method for reconstructing the primordial power spectrum of scalar perturbations using temperature and polarisation data from the Planck, ACT, and SPT CMB experiments. We use the reconstructed scalar primordial power spectrum to derive several quantities related to inflationary dynamics, such as the effective scalar spectral index, slow-roll parameters for a slow and sudden variation of the background, and the speed of sound.
