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hep-th2024
2d theory for asymptotic dynamics of 4d (self-dual) Einstein gravity
Wei Bu, Sean Seet
In this paper, we present a simple chiral 2d theory living on a momentum space celestial sphere whose behaviour exactly produces various IR dynamics of recent resurged interests fo…
hep-th2024
Eikonal amplitudes on the celestial sphere
Tim Adamo, Wei Bu, Piotr Tourkine +1
Celestial scattering amplitudes for massless particles are Mellin transforms of momentum-space scattering amplitudes with respect to the energies of the external particles, and beh…
hep-th2024
A systematic approach to celestial holography: a case study in Einstein gravity
Wei Bu, Sean Seet
We propose a systematic approach to celestial holography in massless theories beginning by studying the implications of properly incorporating field configurations built using the…