Outputs (3)

The graviton four-point function in de Sitter space (2023)
Journal Article
Bonifacio, J., Goodhew, H., Joyce, A., Pajer, E., & Stefanyszyn, D. (2023). The graviton four-point function in de Sitter space. Journal of High Energy Physics, 2023(6), Article 212. https://doi.org/10.1007/jhep06%282023%29212

We compute the tree-level late-time graviton four-point correlation function, and the related quartic wavefunction coefficient, for Einstein gravity in de Sitter spacetime. We derive this result in several ways: by direct calculation, using the in-in... Read More about The graviton four-point function in de Sitter space.

Parity violation in the scalar trispectrum: no-go theorems and yes-go examples (2023)
Journal Article
Cabass, G., Jazayeri, S., Pajer, E., & Stefanyszyn, D. (2023). Parity violation in the scalar trispectrum: no-go theorems and yes-go examples. Journal of High Energy Physics, 2023(2), Article 21. https://doi.org/10.1007/jhep02%282023%29021

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 Effective Field Theory of Inflation and assume scale invariance and a Bun... Read More about Parity violation in the scalar trispectrum: no-go theorems and yes-go examples.

On graviton non-Gaussianities in the Effective Field Theory of Inflation (2022)
Journal Article
Cabass, G., Stefanyszyn, D., Supeł, J., & Thavanesan, A. (2022). On graviton non-Gaussianities in the Effective Field Theory of Inflation. Journal of High Energy Physics, 2022(10), Article 154. https://doi.org/10.1007/JHEP10%282022%29154

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 interactions that can contribute to tree-level graviton bispectra, showin... Read More about On graviton non-Gaussianities in the Effective Field Theory of Inflation.