Speaker
Description
The double copy is a powerful theoretical tool which allows one to reduce complicated gravitational calculations to simpler ones in gauge theory. In this talk, I will describe recent progress in extending these techniques to (A)dS background. First I will explain how to formulate self-dual gravity in AdS4 in terms of a simple scalar theory which makes the double copy manifest and reveals some surprising new connections to celestial holography. I will then describe recent work which extends these ideas beyond the self-dual sector. In particular, I will present a compact new formula for the tree-level wavefunction coefficient of four gravitons in dS4, which was obtained by combining recently developed cosmological bootstrap methods with double copy intuition.
