Quantum Magic in High Energy Collision

Key points

To address the dependence of quantum magic on the basis used to measure spin, it computed both QED and electroweak processes in the lab and helicity bases.
It found opposite trends: the helicity basis generally produces less magic in the ultrarelativistic regime, whereas the lab basis generally produces less in the nonrelativistic regime.
In a quantum-circuit implementation of ultrarelativistic Bhabha scattering, lab-basis circuits at general scattering angles required more T gates, demonstrating the connection between magic and computational cost.
In both bases, nature's weak mixing angle lay close to the value minimizing magic, showing that the earlier conclusion was not merely an artifact of basis choice.
The analysis is limited to event-by-event fixed bases and selected tree-level lepton-scattering processes, leaving extensions to higher-order corrections, non-Abelian interactions, and the full Standard Model for future work.

External research summaries. These are not HDATF publications or measured product results.