 
Summary: arXiv:grqc/0108052v213Jun2004
THE ORIGIN OF THE ELECTROMAGNETIC
INTERACTION IN EINSTEIN'S UNIFIED FIELD THEORY
WITH SOURCES
S. ANTOCI
Abstract. Einstein's unified field theory is extended by the addition
of matter terms in the form of a symmetric energy tensor and of two
conserved currents. From the field equations and from the conserva
tion identities emerges the picture of a gravoelectrodynamics in a dy
namically polarizable Riemannian continuum. Through an approximate
calculation exploiting this dynamical polarizability it is argued that or
dinary electromagnetism may be contained in the theory.
1. Introduction
Recently, it has been shown that, if sources are appended in a certain
way to the field equations of Einstein's unified field theory [1], the con
tracted Bianchi identities and the field equations appear endowed with def
inite physical meaning. The theory looks like a gravoelectrodynamics in a
polarizable Riemannian continuum [2], in which the relationship between
the electromagnetic inductions and fields is dictated by the field equations
in a way that deserves a thorough scrutiny, for the wealth of the implied
