Principal Investigator: Paolo Creminelli
- Early Universe
Abstract: This line of research is devoted to study inflation. It includes research which is quite close to experiments (predictions in various models of inflation, non-Gaussianity and its experimental tests, production of primordial black holes...) and also more theoretical studies of de Sitter space (de Sitter no hair theorem, eternal inflation, wavefunction of the Universe, calculation beyond perturbation theory...). Also alternatives to inflation are part of this research.
Status of project and perspectives: The line of research produced a substantial set of papers (see below) ranging from very theoretical studies of inflation to projects much closer to data. Some colloquia were organised in this line of research: “Primordial Black Holes” by Antonio Riotto, “Galaxy Shapes as a Cosmological Tool” by Elisa Chisari, “A timeless History of Time” by Enrico Pajer and a number of journal clubs and seminars. A 1-week programme “Interpretable and higher-order statistics for the late-time cosmology” organised by Matteo Biagetti will take place in July 2022, with clear overlap with this line of research.
- A de Sitter no-hair theorem for 3+1d Cosmologies with isometry group forming 2-dimensional orbits
- Reheating-Induced Axion Dark Matter After Low Scale Inflation
- The Persistence of Large Scale Structures I: Primordial non-Gaussianity
- Primordial non-Gaussianity from the Effects of the Standard Model Higgs during Reheating after Inflation
- Non-gaussianities for primordial black hole formation
- Solving peak theory in the presence of local non-gaussianities
- Beyond perturbation theory in inflation
- Low-temperature entropy in JT gravity
- Gravity as an ensemble and the moment problem
- The Covariance of Squeezed Bispectrum Configurations
- Fisher Forecasts for Primordial non-Gaussianity from Persistent Homology