John Joseph M. Carrasco (IPhT, Saclay)
Decoding the DNA of prediction, from the smallest to largest scales in nature
Recent conceptual advances have allowed us to delve further than ever before into the quantum corrections to scattering amplitudes, perhaps nature's most perfect microscopic structures. Doing so we have uncovered surprisingly simple relations, and associated double-copy structure, universal to many theories from the entirely formal to the utterly effective, applicable to processes from pion scattering to cosmic inflation. I will gently introduce the field of scattering amplitudes as a conceptual laboratory for probing the invariant predictive content of physical theories. I will talk about some of the technical quests (like the high-energy predictivity of maximally supersymmetric supergravity) that drive progress, touch on some of the broader lessons learned, and some recent generalizations.