Spinor theory of general relativity without elementary gravitons

The authors propose a generally covariant and locally Lorentz invariant theory of a Majorana spinor field psisup(α)sub(μ). This theory has no elementary spin-2 quanta, but does reproduce Einstein's general relativity as a classical solution. This situation is compared with the possibility of finding classical monopoles in a gauge theory, even though no such elementary object is introduced at the outset. (Auth.)