124 citations · 1.7k across the 43 of their papers we have counts for
5 papers · 1 filter
Parity violation in the scalar trispectrum: no-go theorems and yes-go examples
Giovanni Cabass, Sadra Jazayeri, Enrico Pajer +1
We derive a set of no-go theorems and yes-go examples for the parity-odd primordial trispectrum of curvature perturbations. We work at tree-level in the decoupling limit of the Eff…
On Graviton non-Gaussianities in the Effective Field Theory of Inflation
Giovanni Cabass, David Stefanyszyn, Jakub Supeł +1
We derive parity-even graviton bispectra in the Effective Field Theory of Inflation (EFToI) to all orders in derivatives. Working in perturbation theory, we construct all cubic int…
Bootstrapping Large Graviton non-Gaussianities
Giovanni Cabass, Enrico Pajer, David Stefanyszyn +1
Gravitational interferometers and cosmological observations of the cosmic microwave background offer us the prospect to probe the laws of gravity in the primordial universe. To stu…
Zoology of Graviton non-Gaussianities
Giovanni Cabass
We characterize graviton non-Gaussianities in models of inflation where de Sitter boosts are spontaneously broken. We discuss which of the symmetry breaking patterns studied in Nic…
How Gaussian can our Universe be?
Giovanni Cabass, Enrico Pajer, Fabian Schmidt
Gravity is a non-linear theory, and hence, barring cancellations, the initial super-horizon perturbations produced by inflation must contain some minimum amount of mode coupling, o…