K3 Orientifolds
Abstract
We study string theory propagating on R^6 times K3 by constructing orientifolds of Type IIB string theory compactified on the T^4/Z_N orbifold limits of the K3 surface. This generalises the Z_2 case studied previously. The orientifold models studied may be divided into two broad categories, sometimes related by T-duality. Models in category A require either both D5- and D9-branes, or only D9-branes, for consistency. Models in category B require either only D5-branes, or no D-branes at all. This latter case is an example of a consistent purely closed unoriented string theory. The spectra of the resulting six dimensional N=1 supergravity theories are presented. Precise statements are made about the relation of the Z_N ALE spaces and D5-branes to instantons in the dual heterotic string theory.
Keywords
Cite
@article{arxiv.hep-th/9604129,
title = {K3 Orientifolds},
author = {Eric G. Gimon and Clifford V. Johnson},
journal= {arXiv preprint arXiv:hep-th/9604129},
year = {2014}
}
Comments
34 pages in harvmac `b' option. Requires epsf.tex for 8 figures. Revised version (to appear in Nucl. Phys. B.) corrects typographical errors