The Symplectic Structure of N=2 Supergravity and its Central Extension
Abstract
We report on the formulation of N=2 D=4 supergravity coupled to nV abelian vector multiplets in presence of electric and magnetic charges. General formulae for the (moduli dependent) electric and magnetic charges for the nV+1 gauge fields are given which reflect the symplectic structure of the underlying special geometry. The specification to Type IIB strings compactified on Calabi-Yau manifolds, with gauge group U(1)h21+1 is given.
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