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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-th2025
Celestial Holography Revisited
Charlotte Sleight, Massimo Taronna
We revisit the prescription commonly used to define holographic correlators on the celestial sphere of Minkowski space as an integral transform of flat space scattering amplitudes,…
hep-th2025
Conformal Partial Wave Expansion of Celestial Correlators
Francesca Pacifico, Charlotte Sleight, Massimo Taronna
A novel definition of holographic correlation functions on the celestial sphere of Minkowski space was recently introduced in arXiv:2301.01810 as the extrapolation of bulk time-ord…