Abstract

It is shown that the supersymmetric extension of the Stelle-West formalism permits the construction of an action for (3+1)-dimensional N= 1 supergravity with a cosmological constant genuinely invariant under the OSp(4/1). Since the action is invariant under the supersymmetric extension of the AdS group, the supersymmetry algebra closes off shell without the need for auxiliary fields. The limit case m?0, i.e., (3+1)-dimensional N= 1 supergravity, invariant under the Poincaré supergroup is also discussed. © 2003 The American Physical Society.