Title: [NTU-NCTS String Seminar] Differential Double Copy in (A)dS
Speaker: Dr. Hayden Lee (Univ. of Chicago)
Time: June. 1, 2023 (Fri.) 14:30-15:30
Venue: Rm. 815, Dept. of Physics, NTU

Abstract:
Double-copy relations are remarkable properties of scattering amplitudes that express graviton amplitudes as two copies of gluon amplitudes. In this talk I will present the generalization of these relations to (A)dS correlators. I will describe a set of differential operators in (A)dS that generalize on-shell kinematics of flat-space amplitudes. This provides a way to construct (A)dS correlators by replacing the kinematic variables of amplitudes with the corresponding differential operators and suitably ordering them. By construction, the resulting correlators are manifestly conformally invariant with the correct flat-space limit, and exhibit a differential double-copy structure.