Graviton single-minus amplitudes emerge in special kinematics

A new preprint extends previous gluon results to gravitons, showing that single-minus graviton tree amplitudes do not vanish in the half-collinear regime and can be described by explicit formulas derived from symmetry and recursion. This connects gravity amplitudes to Penrose’s w-(1+∞) symmetry and highlights AI-assisted reasoning (via GPT-5.2 Pro) in discovering these results, marking progress in linking quantum mechanics with general relativity and suggesting further extensions.