K-Theory, Reality, and Orientifolds
High Energy Physics - Theory
2009-10-31 v1
Abstract
We use equivariant K-theory to classify charges of new (possibly non-supersymmetric) states localized on various orientifolds in Type II string theory. We also comment on the stringy construction of new D-branes and demonstrate the discrete electric-magnetic duality in Type I brane systems with p+q=7, as proposed by Witten.
Keywords
Cite
@article{arxiv.hep-th/9901042,
title = {K-Theory, Reality, and Orientifolds},
author = {Sergei Gukov},
journal= {arXiv preprint arXiv:hep-th/9901042},
year = {2009}
}
Comments
26 pages, harvmac, no figures