Constraining quantum collapse inflationary models with CMB data
  The hypothesis of the self-induced collapse of the inflaton wave function was
proposed as responsible for the emergence of inhomogeneity and anisotropy at
all scales. This proposal was studied within an almost de Sitter space-time
approximation for the background, which led to a perfect scale-invariant power
spectrum, and also for a quasi-de Sitter background, which allows to
distinguish departures from the standard approach due to the inclusion of the
collapse hypothesis. In this work we perform a Bayesian model comparison for
two different choices of the self-induced collapse in a full quasi-de Sitter
expansion scenario. In particular, we analyze the possibility of detecting the
imprint of these collapse schemes at low multipoles of the anisotropy
temperature power spectrum of the Cosmic Microwave Background (CMB) using the
most recent data provided by the Planck Collaboration. Our results show that
one of the two collapse schemes analyzed provides the same Bayesian evidence of
the minimal standard cosmological model $\Lambda$CDM, while the other scenario
is weakly disfavoured with respect to the standard cosmology.
