Our recent preprint on gluon amplitudes has sparked a lot of discussion, so I want to share the backstory — including how AI helped crack a problem that had stumped us for a year.

I'll also be giving a public lecture at Harvard this week. Details at the end. About a year ago, world experts on this problem, Alfredo Guevara (IAS), David Skinner (Cambridge) and Andy Strominger (Harvard) realized something surprising: single-minus amplitudes should not be identically zero, despite the arguments in some textbooks to the contrary (which have a loophole when the interacting particles are collinear).

The question became: what should these amplitudes actually be?

Thrilled to share I’ve joined OpenAI for Science, a new team building AI systems to advance scientific reasoning and accelerate discovery in math and physics. 🧵 As a theoretical physicist, I used to think it would be a long time before AI could touch the research frontier. Then GPT-5 Pro arrived, and it completely changed my mind.