Climbing the Mountain: The Scientific Biography of Julian Schwinger

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Julian Schwinger was one of the leading theoretical physicists of the twentieth century. His contributions are as important, and as pervasive, as those of Richard Feynman, with whom (and with Sin-itiro Tomonaga) he shared the 1965 Nobel Prize for Physics. Yet, while Feynman is universallyrecognized as a cultural icon, Schwinger is little known even to many within the physics community. In his youth, Julian Schwinger was a nuclear physicist, turning to classical electrodynamics after World War II. In the years after the war, he was the first to renormalize quantum electrodynamics.Subsequently, he presented the most complete formulation of quantum field theory and laid the foundations for the electroweak synthesis of Glashow, Weinberg, and Salam, and he made fundamental contributions to the theory of nuclear magnetic resonance, to many-body theory, and to quantum optics. Hedeveloped a unique approach to quantum mechanics, measurement algebra, and a general quantum action principle. His discoveries include 'Feynman's' parameters and 'Glauber's' coherent states; in later years he also developed an alternative to operator field theory which he called Source Theory,reflecting his profound phenomenological bent. His late work on the Thomas-Fermi model of atoms and on the Casimir effect continues to be an inspiration to a new generation of physicists. This biography describes the many strands of his research life, while tracing the personal life of this privateand gentle genius.
 

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Contents

A New York City childhood
1
Julian Schwinger at Columbia University
22
Schwinger goes to Berkeley
54
During the Second World War
90
Winding up at the Radiation Lab going to Harvard
134
Quantum electrodynamics and Julian Schwingers path
208
the triumph
251
Greens functions and the dynamical action principle 298
298
Electroweak unification and foreshadowing of
411
The Nobel Prize and the last years at Harvard
445
Move to UCLA and continuing concerns
481
Taking the road less traveled
528
The diversions of a gentle genius
567
Appendices
627
B Ph D Students of Julian Schwinger
639
Index of names
645

The world according to Stern and Gerlach
337
Custodian of quantum field theory
377

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About the author (2000)

Jagdish Mehra is Emeritus Professor of Physics at the University of Houston, Texas, and recently served as the UNESCO-Sir Julian Huxley Distinguished Professor of Physics and the History of Science with UNESCO in Paris and Trieste. He is the author of The Beat of a Different Drum: A ScientificBiography of Richard Feynman. Kimball Milton is Professor of Physics at the University of Oklahoma.

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