Superpotentials in IIA compactifications with general fluxes

We derive the effective N = 1, D = 4 supergravity for the seven main moduli of type IIA orientifolds with D6-branes, compactified on T-6 (Z(2) x Z(2)) in the presence of general fluxes. We illustrate and apply a general method that relates the N = I effective Kahler potential and superpotential to a consistent truncation of gauged N = 4 supergravity. We identify the correspondence between various admissible fluxes, N = 4 gaugings and N = 1 superpotential terms. We construct explicit examples with different features: in particular, new IIA no-scale models and a model which admits a supersymmetric AdS(4) vacuum with all seven main moduli stabilized. (c) 2005 Elsevier B.V. All rights reserved.