Building a Boostless Bootstrap for the Bispectrum

Understand

The observation of primordial correlators by cosmological surveys is a very promising avenue to probe high energies and the perturbative regime of quantum gravity.

• Hence, it is imperative that we understand how these observables are shaped by the pillars of fundamental physics, namely unitarity, locality and symmetries.
• To this end, we study the three-point correlators of gravitons and scalar curvature perturbations around a quasi de Sitter spacetime.
• We identify a set of Bootstrap Rules that fully fix the form of these correlators in the asymptotic future, i.e.