This appears as paper #14 (of 7 papers by Schwinger) of the 34 collected papers in his classic reference Selected Papers on Quantum Electrodynamics (1958).
This appears as paper #14 (of 7 papers by Schwinger) of the 34 collected papers in his classic reference "Selected Papers on Quantum Electrodynamics" (1958). Schwinger was awarded the Nobel Prize in 1965 along with Feynman and Tomonaga "for...fundamental work in quantum electrodynamics, with deep-ploughing consequences for the physics of elementary particles". "Following the establishment of the theory of relativity and quantum mechanics, an initial relativistic theory was formulated for the interaction between charged particles and electromagnetic fields. However, partly because the electron's magnetic moment proved to be somewhat larger than expected, the theory had to be reformulated. Julian Schwinger solved this problem in 1948 through "renormalization" and thereby contributed to a new quantum electrodynamics."--Nobelprize.org
"On 13 June 1978 the Nobel laureate Chen Ning Yang wrote the following to the chairman of the physics department at the University of California, Los Angeles (UCLA) to support Julian Schwinger’s appointment as professor:
"Professor Julian Schwinger is among the great physicists of the contemporary era. His work covers an amazing range, from nuclear physics to elementary particle physics to field theory, from synchrotron radiation to group theory to microwave propagation.… The most important work of Schwinger was his contribution to renormalization, a contribution that stands among the greatest developments in physics in mid-twentieth century. Professor Schwinger is an eminently successful teacher. He probably has graduated more influential theoretical PhD students than any other living physicist."--Dictionary of Scientific Biography
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