19–21 mai 2025
IPHC
Fuseau horaire Europe/Paris

A Lorentz-Equivariant Transformer for All of the LHC

20 mai 2025, 16:40
15m
Amphi Grünewald (IPHC)

Amphi Grünewald

IPHC

Institut Pluridisciplinaire Hubert Curien 23 rue du Loess 67200 Strasbourg
Methods and Tools Methods and Tools

Orateur

Jonas Spinner (Heidelberg University)

Description

We show that the Lorentz-Equivariant Geometric Algebra Transformer (L-GATr) yields state-of-the-art performance for a wide range of machine learning tasks at the Large Hadron Collider. L-GATr represents data in a geometric algebra over space-time and is equivariant under Lorentz transformations. The underlying architecture is a versatile and scalable transformer, which is able to break symmetries if needed. We demonstrate the power of L-GATr for amplitude regression and jet classification, and then benchmark it as the first Lorentz-equivariant generative network. For all three LHC tasks, we find significant improvements over previous architectures.

Author

Jonas Spinner (Heidelberg University)

Documents de présentation