On the Moduli Space of the T6/Z3 Orbifold and Its Modular Group
S. Ferrara, P. Frè, P. Soriani
Abstract
We describe the duality group Γ=SU(3,3,Z) for the Narain lattice of the T6/Z3 orbifold and its action on the corresponding moduli space. A symplectic embedding of the momenta and winding numbers allows us to connect the orbifold lattice to the special geometry of the moduli space. As an application, a formal expression for an automorphic function, which is a candidate for a non--perturbative superpotential, is given.
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