## Abstract

A Z_{2} orbifold compactification of the heterotic string is considered. The resulting 6D GUT groups can be SO(16) or E7 x SU(2) plus some hidden sector groups. The N = 4 supersymmetry is reduced to N = 2. In particular, the SO(16) 6D model with one spinor representation 128 can reduce to the previous 5D SO(16) or SO(14) family unification models after compactifying the sixth dimension. To obtain one spinor, we have to take into account the left-over center of SO(16). We also comment on the E7 × SU(2) model.

Original language | English |
---|---|

Pages (from-to) | 81-86 |

Number of pages | 6 |

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

Volume | 552 |

Issue number | 1-2 |

DOIs | |

State | Published - 16 Jan 2003 |

### Bibliographical note

Funding Information:We thank Paul Frampton and Kyuwan Hwang for useful discussions. One of us (J.E.K.) thanks Humboldt Foundation for the award. This work is supported in part by the BK21 program of Ministry of Education, and the KOSEF Sundo Grant.

## Keywords

- 6D SO(16) GUF
- Orbifold
- SU(2) holonomy
- Superstring

## Fingerprint

Dive into the research topics of 'Z_{2}orbifold compactification of heterotic string and 6D SO(16) and E

_{7}× SU(2) flavor unification models'. Together they form a unique fingerprint.