Comments on the classification of orientifolds
arXiv:hep-th/0212244 · doi:10.1088/0264-9381/20/12/317
Abstract
The simple current construction of orientifolds based on rational conformal field theories is reviewed. When applied to SO(16) level 1, one can describe all ten-dimensional orientifolds in a unified framework.
9 pages, Contribution to proceedings of RTN-workshop in Leuven, Belgium, September 2002