## Abstract

We study the blowing-up of the four-dimensional Z_{3} orientifold of Angelantonj, Bianchi, Pradisi, Sagnotti and Stanev (ABPSS) by giving nonzero vacuum expectation values (VEV's) to the twisted sector moduli blowing-up modes. The blowing-up procedure induces a Fayet-Iliopoulos (FI) term for the "anomalous" U(l), whose magnitude depends linearly on the VEV's of the blowing-up modes. To preserve the N = 1 supersymmetry, non-Abelian matter fields are forced to acquire nonzero VEV's, thus breaking (some of) the non-Abelian gauge structure and decoupling some of the matter fields. We determine the form of the FI term, construct explicit examples of (non-Abelian) D and F flat directions, and determine the surviving gauge groups of the restabilized vacua. We also determine the mass spectra, for which the restabilization reduces the number of families.

Original language | English (US) |
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Pages (from-to) | XXX-20 |

Journal | Journal of High Energy Physics |

Volume | 3 |

Issue number | 4 |

DOIs | |

State | Published - 1999 |

## All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

## Keywords

- Anomalies in Field and String Theories
- Superstring Vacua