THE 3-FORM MULTIPLET IN SUPERGRAVITY

We derive the couplings of the 3-form supermultiplet to the general su pergravity-matter-Yang-Mills system, Based on the methods of superspac e geometry, we identify component fields, establish their supergravity transformations and construct invariant component field actions. Two specific applications are addressed: the appearance of fundamental 3-f orms in the context of strong-weak duality and the use of the 3-form s upermultiplets to describe effective degrees of freedom relevant to th e mechanism of gaugino condensation.