Speaker
Dr
Michele Liguori
(Univ. of Padova)
Description
Primordial non-Gaussianity (NG) is a powerful probe of Inflation, able to test extra-interactions and extra-degrees of freedom in scenarios beyond the simplest, standard single-field slow-roll paradigm.The most important observational signature of primordial NG is a non-vanishing bispectrum (3-point function in Fourier/harmonic space) of the primordial perturbation field. After showing the link between different bispectrum shapes and corresponding inflationary scenarios, I will describe current bispectrum constraints obtained from the analysis of Planck CMB data. I will then discuss future potential improvements over Planck results, coming from the next generation CMB and galaxy surveys, and their implications. I will conclude by showing the limits that can be in principled achieved in more futuristic experimental scenarios, exploiting 21 cm and CMB spectral distortion fluctuations.
| Overview or Regular Talk? | Overview: 75 min. |
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Author
Dr
Michele Liguori
(Univ. of Padova)
