THE RELATIVISTIC QUANTUM theory of fields was born some 35 years ago through the paternal efforts of Dirac, Heisenberg, Pauli and others. It was a somewhat retarded youngster, however, and first reached adolescence 17 years later, an event which we are gathered here to celebrate. But it is the subsequent development and more mature phase of the subject that I wish to discuss briefly today.
REFERENCES
1.
2.
R. Feynman j and A. Hibbs, Quantum Mechanics and Path Integrals, McGraw‐Hill, N.Y., 1965.
3.
In the first two papers cited in Ref. I, I have assumed space‐reflective invariance and shown the equivalence between the spin‐statistics relation and the invariance of the action principle under combined time reflection and complex conjugation. It was later remarked by Pauli that the separate hypothesis of space‐reflection invariance was unnecessary. W. Pauli, Niels Bohr and the Development of Physics, McGraw‐Hill, N.Y., 1955.
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J. Schwinger, Second Coral Gables Conference on Symmetry Principles at High Energy, W. H. Freeman & Co., San Francisco, 1965;
12.
The general theory is described by
P.
Martin
and J.
Schwinger
, Phys. Rev.
115
, 1342
(1959
).
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© 1966 American Institute of Physics.
1966
American Institute of Physics
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