AI and Chiral Fermions

It turns out that yesterday there was another AI result coming out of OpenAI, quite different than the slopocalypse and of more interest to fundamental physics. Nathaniel Craig, a particle theorist now on a one-year visiting position at OpenAI, put on the arXiv a preprint entitled A gauge-invariant measure for lattice chiral fermions. This was produced with heavy use of OpenAI’s latest model, GPT-6 Astra: OpenAI’s GPT-6 Astra model was essential to this result. I proposed a strategy to extend Lüscher’s abelian result using refinement methods that underwent several rounds of iteration with Astra and outside experts before arriving at the current Astra-led proof. The manuscript combines author-written sections with extensive rewrites of the Astra-composed proof. My colleagues and I proposed tests of the method, including Lean verification, that were carried out by Astra; supplementary materials documenting some of these checks were written by Astra. Some observations about the…