89 citations · 194 across the 5 of their papers we have counts for
5 papers
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…
The Boostless Bootstrap and BCFW Momentum Shifts
David Stefanyszyn, Jakub Supeł
In a recent paper [1], three-particle interactions without invariance under Lorentz boosts were constrained by demanding that they yield tree-level four-particle scattering amplitu…
The Boostless Bootstrap: Amplitudes without Lorentz boosts
Enrico Pajer, David Stefanyszyn, Jakub Supeł
Poincaré invariance is a well-tested symmetry of nature and sits at the core of our description of relativistic particles and gravity. At the same time, in most systems Poincaré in…
Spatial Curvature at the Sound Horizon
Guus Avis, Sadra Jazayeri, Enrico Pajer +1
The effect of spatial curvature on primordial perturbations is controlled by , where is today's fractional density of spatial curvature and $ c_{s}…