Five-dimensional approach to the neutrino and electron theories

The theories of the neutrino and the electron are studies from a five-dimensional point of view. The concept of periodic 5-spinors is examined, and the formalism of five-dimensional spinor calculus is applied to the manipulations of spinor equations. It is shown that the five-dimensional approach reproduces the results of the familiar four-dimensional approach in a unified and coherent manner. Furthermore, the present approach predicts in a natural way the correct coupling to the electromagnetic field, without ad hoc assumptions.