William A. Bardeen -- A Brief Biography
Abstract
William Allan Bardeen (September 15, 1941 November 18, 2025) was an American theoretical physicist who worked at the Fermi National Accelerator Laboratory. He is renowned for his foundational work on the chiral anomaly, the Adler-Bardeen theorem, the non-Abelian anomaly and gravitational anomalies. He was instrumental in the development of quantum chromodynamics and its applications, such as semileptonic decays and the scheme frequently used in perturbative analysis of high energy processes involving strong interactions. Bardeen also played a major role in developing a theory of dynamical breaking of electroweak symmetry via top quark condensates, leading to one of the first composite Brout-Englert-Higgs boson models. His work on the chiral symmetry dynamics of heavy-light quark bound states correctly predicted abnormally long-lived resonances which are chiral symmetry partners of the ground state.
Cite
@article{arxiv.2604.10204,
title = {William A. Bardeen -- A Brief Biography},
author = {Christopher T. Hill},
journal= {arXiv preprint arXiv:2604.10204},
year = {2026}
}