A First-Order Variational Principle for Classical Electrodynamics

1 October 1948

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 74 (7) , 779-781
https://doi.org/10.1103/physrev.74.779

Abstract

The fact that the Schrödinger and the Dirac equations for the wave function of an electron are differential equations of the first order with respect to time, while in classical theories differential equations of the second order are common, has necessitated a slightly different setup of the canonical theory in both fields. Under influence of the classical methods, second-order equations are also often used in the quantum theory of particles of integer spin, thus causing a difference between the treatment of Fermi-Dirac and of Einstein-Bose particles.

Keywords

This publication has 7 references indexed in Scilit:

On the spin angular momentum of mesons
Published by Elsevier ,2004
On the vanishing of divE—4πρ in quantumelelectrodynamics
Physica, 1946
On the longitudinal and the transversal delta-function, with some applications
Physica, 1946
Über freie teilchen mit nichtverschwindender masse und beliebiger spinquantenzahl
Physica, 1941
On the quantum theory of wave fields
Physica, 1940
On the current and the density of the electric charge, the energy, the linear momentum and the angular momentum of arbitrary fields
Physica, 1940
Theory of Heavy Quanta
Published by Springer Nature ,1939