Speaker
Description
According to the standard paradigm, parity is a fundamental symmetry of the Universe. A measure of parity violation in the Universe will inevitably be a smoking-gun for new physics. About one year ago a parity breaking signature from the scalar sector of inflation was claimed by the analysis of the BOSS-galaxy parity-odd trispectrum. More recently, a CMB analysis of the temperature anisotropies parity-odd trispectrum revealed that no parity violation should occur in the inflationary scalar sector, opening up a new (large) tension between LSS and CMB measurements of inflation. In this presentation I will outline the important role of the tensor sector of inflation and scalar-tensor primordial non-Gaussianities in constraining parity violation from the early-Universe. In particular, I will talk about the direct detection of the V-mode gravitational waves anisotropies as a new observational channel to measure parity-violation from inflation.
