English

Orientifolds and twisted boundary conditions

High Energy Physics - Theory 2009-10-31 v2

Abstract

It is argued that the T-dual of a crosscap is a combination of an O+ and an O- orientifold plane. Various theories with crosscaps and D-branes are interpreted as gauge-theories on tori obeying twisted boundary conditions. Their duals live on orientifolds where the various orientifold planes are of different types. We derive how to read off the holonomies from the positions of D-branes in the orientifold background. As an application we reconstruct some results from a paper by Borel, Friedman and Morgan for gauge theories with classical groups, compactified on a 2-- or 3--torus with twisted boundary conditions.

Keywords

Cite

@article{arxiv.hep-th/0004073,
  title  = {Orientifolds and twisted boundary conditions},
  author = {Arjan Keurentjes},
  journal= {arXiv preprint arXiv:hep-th/0004073},
  year   = {2009}
}

Comments

23 pages, LaTeX, 2 eps figures; minor corrections, references added

R2 v1 2026-07-22T14:57:37.442Z