A possible unification of the electromagnetic and weak interaction with the gravitational field

It is suggested that the generators of SL(6,c) containing the Lorentz group SL(2,c) and SU3 as sub-groups, may be unified with the gravitational field. For that purpose they are combined into a single ''tetrad'' whose completeness relation then yields the gravitational potentials. The appropriate field equations are written down in analogy with previous formulations given by Einstein and others. Upon projecting on the space tetrad the contributions of these internal variables may be isolated and the relevant equations found. (Auth.)