A Bayesian analysis of inflationary primordial spectrum models using
  Planck data
  The current available CMB data show an anomalously low value of the CMB
temperature fluctuations at large angular scales (l < 40). This lack of power
is not explained by the minimal LCDM model, and one of the possible mechanisms
explored in the literature to address this problem is the presence of features
in the primordial power spectrum (PPS) motivated by the early universe physics.
In this paper, we analyse a set of cutoff inflationary PPS models using a
Bayesian model comparison approach in light of the latest Cosmic Microwave
Background (CMB) data from the Planck Collaboration. Our results show that the
standard power-law parameterisation is preferred over all models considered in
the analysis, which motivates the search for alternative explanations for the
observed lack of power in the CMB anisotropy spectrum.
