2 papers
hep-th2025
Celestial Mellin Amplitudes II: Spin-1 and Spin-2 Exchange, and Beyond
Sébastien Malherbe, Sébastien Malherbe, Paolo Pergola +2
We further develop celestial Mellin amplitudes arXiv:2412.11992 to capture the exchange of particles with spin. For massless external scalar fields, we derive closed-form celestial…
hep-th2024
Celestial Mellin Amplitudes
Francesca Pacifico, Paolo Pergola, Charlotte Sleight
Holographic correlators on the celestial sphere of Minkowski space were recently defined in arXiv:2301.01810 as the extrapolation of bulk time-ordered correlation functions to the…