SPINOR 1-FORMS AS GRAVITATIONAL POTENTIALS

General relativity is derived from an action which is quadratic in the covariant derivative of certain spinor 1-form gravitational potential s. Either a pair of two-component spinor 1-forms or a single Dirac spi nor 1-form can be employed. The metric is a quadratic function of thes e spinor 1-forms. In the two-component spinor formulation the action d iffers from the usual chiral action for general relativity by a total differential. In the Dirac spinor formulation the action is the real p art of the former one. The Hamiltonian is related to the ones in posit ive energy proofs and spinorial quasilocal mass constructions.