  The tree-level wavefunction coefficient for four gravitons in de Sitter space
was recently bootstrapped using the Cosmological Optical Theorem, flat space
limit, and Manifestly Local Test \cite{Bonifacio:2022vwa}. Inspired by the
double copy for scattering amplitudes, we derive a compact new expression for
this quantity starting from the wavefunction coefficient for gluons.

High Energy Physics - Theory;General Relativity and Quantum Cosmology