The Dirac equation in Cartesian gauge
arXiv:gr-qc/9711089
Abstract
It is shown that in the case of the spherically symmetric static backgrounds there is a gauge in which the Dirac equation is manifestly covariant under rotations. This allows us to separate the spherical variables like in the flat space-time, obtaining a pair of radial equations and a specific form of the radial scalar product.
8 pages, LaTeX article