Speaker
Mario Ballardini
(University of Bologna)
Description
The predictions of the simplest
inflationary models, such as a flat Universe and Gaussian adiabatic
perturbations with a red tilt, provide a remarkable good fit to the most
recent measurements of CMB temperature and
polarization anisotropies. Nevertheless, deviations from a simple
power-law spectrum provide a better fit to Planck temperature anisotropies
data, in particular on the largest scales, i.e. at $k < 0.008\ Mpc^{-1}$,
although at a non-statistical significant level because of cosmic
variance. We study the capability of future galaxy surveys as EUCLID and
other experiments to distinguish possible deviations from a simple
power-law for primordial perturbation on these large scales.
Primary author
Mario Ballardini
(University of Bologna)
