3 papers
hep-th2026
Unifying soft and hard dynamics: The hard current algebra in celestial holography
Reiko Liu, Wen-Jie Ma
Soft current algebras capture the infrared structure of scattering in asymptotically flat spacetimes, but an analogous algebraic description of finite-energy dynamics has been miss…
hep-th2025
Regular celestial amplitudes
Reiko Liu, Wen-Jie Ma
Conventional massless celestial amplitudes are distributional and fail to realize the celestial OPE -- most sharply in the non-MHV paradox, where OPEs predict nonzero celestial amp…
hep-th2025
Amplitude from crossing-symmetric celestial OPE
Reiko Liu, Wen-Jie Ma
Assuming the existence of crossing symmetric celestial OPE, we propose a method to reconstruct four-point massless scattering amplitudes in the framework of celestial holography. T…