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N=2 Super-Higgs, N=1 Poincare' Vacua and Quaternionic Geometry
In the context of N=2 supergravity we explain the occurrence of partial
super-Higgs with vanishing vacuum energy and moduli stabilization in a model
suggested by superstring compactifications on type IIB orientifolds with 3-form
fluxes.
The gauging of axion symmetries of the quaternionic manifold, together with
the use of degenerate symplectic sections for special geometry, are the
essential ingredients of the construction.Comment: 18 page