Abstract
We study N = 1 supergravity models where the Kähler metric of the scalar manifold has a dilatation isometry. It is demonstrated that, if the Kähler potential transforms in a particular way under dilatations, the scalar potential is semipositive definite giving rise to a vanishing cosmological constant at the classical level. We find a class of supergravity models based on kählerian symmetric manifolds which represents a natural generalisation of no-scale models and SU( N, 1) supergravity. The mass spectrum of these theories exhibits manifest SUSY-breaking.
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