Claude completes a 9-loop physics calculation experts thought too hard to run directly
minchoi · x · 2026-09-27
- Anthropic's Science Blog reports Claude completed a nine-loop scattering amplitude calculation that physicists considered too hard to compute directly — one prompt, days of largely unsupervised work, roughly $1K–$2K, independently verified.
- Context: each added "loop" makes the answer more precise but multiplies computation exponentially; most work stops at 2–3 loops, and the previous record of eight loops in planar N=4 super-Yang-Mills was set by SLAC's Lance Dixon and collaborators.
- The challenge was issued last month by physicist @4gravitons: could an AI push past eight loops in this testing-ground model?
Related event: Claude Breaks Nine-Loop Physics Record, Scooping Human Team(27 posts)→
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