We derive the lagrangian and the transformation laws of N = 4 gauged supergravity coupled to matter multiplets whose σ-model of the scalars is SU(1,1)/U(1) ⊗ SO (6,6 + n)/SO(6) ⊗ SO(6 + n) and which corresponds to the effective lagrangian of the type-IIB string compactifled on the T6/ℤ2 orientifold with fluxes turned on and in presence of n D3-branes. The gauge group is T12 ⊗ G where G is the gauge group on the brane and T12 is the gauge group on the bulk corresponding to the gauged translations of the R-R scalars coming from the R-R four-form. The N = 4 bulk sector of this theory can be obtained as a truncation of the Scherk-Schwarz spontaneously broken N = 8 supergravity. Consequently the full bulk spectrum satisfies quadratic and quartic mass sum rules, identical to those encountered in Scherk-Schwarz reduction gauging a flat group. This theory gives rise to a no scale supergravity extended with partial super-Higgs mechanism.
|Pages (de - à)||1133-1182|
|Nombre de pages||50|
|journal||Journal of High Energy Physics|
|Numéro de publication||6|
|Etat de la publication||Publié - 1 juin 2003|