Bill Bardeen was an exceptional scientist who made seminal contributions to many areas of theoretical physics, and a long-time friend of the ACP.
After graduating from Cornell, Bill received his Ph.D. from the University of Minnesota. Following research appointments at Stony Brook and the IAS, he was an Assistant and Associate Professor at Stanford. In 1975, he moved to Fermilab, where he spent the rest of his career, and was the head of the theory group for many years.
Bill was one of the discoverers of the chiral anomaly, and in 1969 with Stephen Adler he proved the non-renormalization theorem of its coefficient. Throughout his career, he made fundamental contributions to many aspects of gauge theories, QCD, and models of electroweak symmetry breaking.
For his outstanding contributions to physics, he was elected Fellow of the American Physical Society, awarded the Sakurai Prize, and elected a Member of the National Academy of Sciences.
Bill had served as a Member and Trustee of the ACP. In addition, for many years, he very generously rented his apartment to the Center. He will be dearly missed by all of us who knew him.