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hep-th2024
Celestial Optical Theorem
Reiko Liu, Wen-Jie Ma
We establish the nonperturbative celestial optical theorem from the unitarity of -matrix. This theorem provides a set of nonperturbative bootstrap equations of the conformal par…
hep-th2024
Massive celestial amplitudes and celestial amplitudes beyond four points
Reiko Liu, Wen-Jie Ma
We compute scalar three-point celestial amplitudes involving two and three massive scalars. The three-point coefficient of celestial amplitudes with two massive scalars contains a…