Claude pushes theoretical physics to nine loops, beating the previous eight-loop record

ctjlewis · x · 2026-09-26

Anthropic's science blog reports that Claude completed a nine-loop calculation in the planar N=4 super-Yang-Mills testbed, where each added loop in scattering-amplitude computations multiplies complexity exponentially and most work stops at two or three loops. The previous record of eight loops was set by SLAC's Lance Dixon and collaborators; the push came after physicist @4gravitons challenged AI to break it.

Related event: Anthropic Says Claude Autonomously Computes Nine-Loop Scattering Amplitude, Breaking Physics Record(12 posts)→

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