Speaker
Dr
Filippo Vernizzi
(IPhT, CEA/Saclay)
Description
CMB non-Gaussianity can be used to discriminate between models of the early universe. However, to correctly measure a primordial signal we must remove any contamination from intrinsic non-linear effects intervening between the initial conditions and the CMB anisotropies. I will compute these effects, first when one of the momenta is much smaller than the others (squeezed limit) and then with a full second-order calculation using the Boltzmann COSMOLib2nd. I will then discuss their observability and their contamination to measurement of a primordial signal.
Primary author
Dr
Filippo Vernizzi
(IPhT, CEA/Saclay)
