A Remark on the Coupling of Gravitation and Electron

Hermann Weyl
1950 Physical Review  
In Einstein s theory of gravitation one may consider either the metric potentials g;k, or both the metric potentials and the components of the affine connection, as independent quantities (metric~&s. mixed theory) in the coupling of gravitational and electronic 6elds. This makes a difference for the ensuing equations, but one that can be easily straightened out by a slight change of the Lagrangian; see the Theorem at the end of the paper.
doi:10.1103/physrev.77.699 fatcat:236rqilskjcbpgykfs742rafhi