Abstract
We study a U (N) gauged [Formula: see text] supergravity model with one hypermultiplet parametrizing SO (4, 1)/ SO (4) quaternionic manifold. Local [Formula: see text] supersymmetry is known to be spontaneously broken to [Formula: see text] in the Higgs phase of U (1) graviphoton × U (1). Several properties are obtained of this model in the vacuum of unbroken SU (N) gauge group. In particular, we derive mass spectrum analogous to the rigid counterpart and put the entire resulting potential on this vacuum in the standard superpotential form of [Formula: see text] supergravity.
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