Regular celestial amplitudes

[摘要] 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 amplitudes with helicities −+++ that are known to vanish at tree level. To resolve this, we introduce regular celestial amplitudes. We demonstrate that at tree-level, these amplitudes are non-distributional and, crucially, consistent with the celestial OPE. This suggests a revised dictionary: CCFT correlators are the regular, not conventional, celestial amplitudes.

[发布日期] 2026-09-03

[关键词] Conformal and W Symmetry;Scattering Amplitudes;Field Theories in Lower Dimensions