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HEP-TH Wednesday Seminars

Joint Nordita-Uppsala Seminar: AI for Analytic Amplitudes

by Lance Dixon (SLAC)

Europe/Stockholm
Å101130 (Ångströmlaboratoriet)

Å101130

Ångströmlaboratoriet

Description

Scattering amplitudes at high loop orders are remarkably difficult for humans to compute.  Can machines do any better?As a first exercise, we map a set of scattering amplitudes into a “language-like” representation using the symbol associated with multiple polylogarithms. Then we train a transformer-based model (think ChatGPT) to predict (integer) coefficients of “words” in the symbol. Such models can also learn correlations between coefficients at different loop orders. I also discuss the next phase(s) of this work, i.e. whether one can predict the next loop order from information gleaned at lower orders.