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2020-12-19 15:56:40
FEYNMAN, Richard P.
Quantum Electrodynamics and Meson Theories. Notes on the Lectures by Professor Richard P. Feynman, Cornell University. Given at the California Institute of Technology, Pasadena, California, February 6 to March 2, 1950. Prepared by Carl W. Helstrom and Malvin A. Ruderman.
[Not published: California Institute of Technology, Pasadena, CA: 1950]. First edition. FEYNMAN'S UNPUBLISHED LECTURES ON MESON THEORY. First and only edition, extremely rare, of the mimeographed notes of Feynman's lecture course on meson theory, delivered as a visiting lecturer at Caltech (to which he moved permanently in the following year). Feynman had developed his distinctive diagrammatic approach while attempting to solve the problem of divergences in quantum electrodynamics (QED), the quantum theory of the interactions between electrically charged particles and the electromagnetic field (between electrons and photons, for example). "What captured most theorists' attention soon after the war was not electron physics, but rather the embarrassment of riches suddenly pouring forth from the new accelerators. A flood of new particles, similar to but in many ways distinct from the familiar electrons and photons, surprised physicists when they began to probe high-energy interactions with the aid of accelerators, rather than relying only upon cosmic rays. As quickly became clear, the new particles - dubbed 'mesotrons' or 'mesons', since the masses of many of them were intermediate between electrons and protons - interacted with each other differently than electrons and photons did" (Kaiser, p. 57). Feynman became interested in meson theory while he was still perfecting his understanding of QED, but his ideas in this area remain unpublished (see below) - these notes are thus a key historical record of Feynman's work on meson theory. Appearing 13 years before his famous three-v … [Click Below for Full Description]
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