Julian Schwinger


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Schwinger, Julian

 

Born Feb. 12, 1918, in New York. American physicist.

After receiving the Ph.D. degree from Columbia University in 1939, Schwinger worked at the University of California (Berkeley), Cambridge University, the University of Chicago, and Boston University. From 1943 to 1946 he worked at the Radiation Laboratory of the Massachusetts Institute of Technology. From 1947 to 1972 he was a professor at Harvard University. In 1972 he became a professor at the University of California (Los Angeles).

Schwinger’s main works deal with quantum field theory, the theory of nuclear forces, the theory of scattering and radiation, and the quantum theory of many-particle systems based on Green functions. Schwinger was the first to set down the foundations of quantum electrodynamics in covariant form and to calculate a number of radiation corrections. Schwinger worked out the variational method in the theory of scattering.

In 1965, Schwinger, R. P. Feynman, and S. Tomonaga were awarded a Nobel Prize. Schwinger is a member of the US National Academy of Sciences and the American Academy of Arts and Sciences.

WORKS

In Russian translation:
Teoriia kvantovykh polei. Moscow, 1956. (Translated from English.)
“Kvantovaia elektrodinamika.” In the collection Noveishee razvitie kvantovoi elektrodinamiki. Moscow, 1954.
“Brounovskoe dvizhenie kvantovogo ostsilliatora.” In P. Martin and J. Schwinger, Teoriia sistem mnogikh chastits. Moscow, 1962.
References in periodicals archive ?
His most notable work was on quantum electrodynamics and in 1965, together with Sin-Itiro Tomonaga and Julian Schwinger, he received the Nobel Prize in physics "for their fundamental work in quantum electrodynamics, with deep-ploughing consequences for the physics of elementary particles" (4).
London, United Kingdom, December 11, 2013 --(PR.com)-- Freeman Dyson is recognised for demonstrating the equivalence of two formulations of quantum electrodynamics: Richard Feynman's diagrams, and the operator method developed by Julian Schwinger and Sin-Itiro Tomonaga.
Feynman shared the 1965 Nobel physics prize with Sin-Itiro Tomonaga and Julian Schwinger for "fundamental work in quantum electrodynamics, with deep-ploughing consequences for the physics of elementary particles:' Krauss here gives us useful perspective on how physicist Freeman Dyson was crucial in Feynman's career and fame.
During a heady year beginning in the spring of 1947, Julian Schwinger of Harvard University finally managed to calculate a value for the strength of the electron's magnetic field that agreed with new experimental findings.
Immediately following the Shelter Island conference Julian Schwinger set to work to develop a Lorentz-invariant formulation of QED--a formulation which is completely consistent with the requirements of special relativity--and to calculate a prediction for the Lamb shift from first principles.
Feynman, Julian Schwinger, and Sin-Itiro Tomonaga figured out a way to make the infinite values cancel out by means of a process called renormalization.
And before his death last year, UCLA physicist and Nobelist Julian Schwinger proposed that the bubble's radiation could come from a subtle quantum effect involving electrons.