English

Type I Vacua from Diagonal $Z_3$-Orbifolds

High Energy Physics - Theory 2014-11-18 v3

Abstract

We discuss the open descendants of diagonal irrational Z3Z_3 orbifolds, starting from the c=2c=2 case and analyzing six-dimensional and four-dimensional models. As recently argued, their consistency is linked to the presence of geometric discrete moduli. The different classes of open descendants, related to different resolutions of the fixed-point ambiguities, are distinguished by the number of geometric fixed points surviving the unoriented projection.

Cite

@article{arxiv.hep-th/9912218,
  title  = {Type I Vacua from Diagonal $Z_3$-Orbifolds},
  author = {Gianfranco Pradisi},
  journal= {arXiv preprint arXiv:hep-th/9912218},
  year   = {2014}
}

Comments

16 pages, LATEX. Introduction slightly expanded, references added. Version to appear in Nucl. Phys. B

R2 v1 2026-07-22T16:18:59.253Z