### Abstract

We describe the low-energy effective theory of N = 1 spontaneously broken supergravity obtained by flux-induced breaking in the presence of n D3-branes. This theory can be obtained by integrating out three massive gravitino multiplets in the hierarchical breaking N = 4 → 3 → 2 → 1 of a N = 4 orientifold. This integration also eliminates the IIB complex dilaton. The resulting theory is a no-scale supergravity model, whose moduli are the three chiral multiplets that correspond to the three radii of T_{2} × T_{2} × T_{2} in T_{6}, together with the 6n brane coordinates. The U(n) gauge interactions on the branes respect the no-scale structure, and the N = 1 goldstino is the fermionic partner of the T_{6} volume.

Original language | English (US) |
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Pages (from-to) | 411-415 |

Number of pages | 5 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 545 |

Issue number | 3-4 |

DOIs | |

State | Published - Oct 10 2002 |

### ASJC Scopus subject areas

- Nuclear and High Energy Physics