A Note on Rainich's Condition in the Null Case
It is shown that bivectors are not necessary to satisfy the Rainich conditions in the null case.
gr-qc↗
arXiv subjects
L. Kannenberg
Publications and source records attributed to L. Kannenberg.
Gauging Geometry: A Didactic Lecture
Local inertial frame invariance is taken as the fundamental principle of physical geometry, where a local inertial frame is represented by a verbein. Invariance of the vierbein with respect to local Lorentz transformations then expresses local inertial frame invariance. The dynamics of physical geometry develops as a gauge theory of the verbein that is closely analogous to the Yang-Mills field provided the verbein connection and curvature correspond to the geometric potential and field respectively. The resulting theory is shown to be equivalent to Einstein's tensor form of relativistic gravitation.
physics.gen-ph↗