The relativity quantum theory of an electron moving in a given electromagnetic field,
although successful in predicting the spin properties of the electron, yet involves one serious …

In a previous paper by the author* it is shown that the general theory of quantum mechanics
together with relativity require the wave equation for an electron moving in an arbitrary …

The Lorentz model of the electron as a small sphere charged with electricity, possessing
mass on account of the energy of the electric field around it, has proved very valuable in …

In the theory of the electromagnetic field without charges, the potentials are not fixed by the
field, but are subject to gauge transformations. The theory thus involves more dynamical …

The new quantum mechanics, when applied to the problem of the structure of the atom with
point-charge electrons, does not give results in agreement with experiment. The …

Communicated March 7, 1929 The Problem.-The translation of Dirac's theory of the electron
into general relativity is not only of formal significance, for, as we know, the Dirac equations …

Existing attempts to apply the quantum theory to the electromagnetic field are open to
serious objections. Above all, the time is treated differently from the space co-ordinates; the …

1. In a recent paper Dirac* has brilliantly removed the defects before existing in the
mechanics of the electron, and has shown how the phenomena usually called the “spinning …

TTEMPTS to evaluate radiative corrections to elec-tron phenomena have heretofore been
beset by divergence difficulties, attributable to self-energy and vacuum polarization effects …

The investigations of Dirac (1936) on relativistic wave equations for particles with arbitrary
spin have recently been followed up by one of us (Fierz, 1939, referred to as (A)) It was there …