A symmetric theory of electrons and positrons

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It is shown that it is possible to achieve complete formal symmetrization in the electron and proton quantum theory by means of a new quantization process. The meaning of Dirac equations is somewhat modified and there is no longer any reason to speak of negative-energy states nor to assume, for any other types of particles, especially neutral ones, the existence of antiparticles, corresponding to the “holes” of negative energy.

Translated from “Il Nuovo Cimento”, vol. 14, 1937, pp. 171–184, by Luciano Maiani in “Soryushiron Kenkyu”, 63 (1981) 149–462. (Courtesy of L. Maiani.) The present translation has been revised by the Editor with the addition of the summary which was missing in “Soryushiron Kenkyu”.