AI and the World's Hard Problems · Physics · arXiv · 2026-10-22
Lorentz-Equivariant Geometric Algebra Transformers for Top-Quark Event Reconstruction
Lorentz-equivariant geometric algebra transformers (LGaTr) were evaluated on three top-quark event identification and reconstruction tasks. Geometric algebra provides a common Lorentz-covariant representation for four-momenta and typed physical objects. LGaTr outperformed baseline networks in tW versus top-quark pair separation and full event reconstruction, with performance comparable to or better than standard Transformer-based networks.