K-Theory, Reality, and Orientifolds
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.
- Publication:
-
Communications in Mathematical Physics
- Pub Date:
- 2000
- DOI:
- 10.1007/s002200050793
- arXiv:
- arXiv:hep-th/9901042
- Bibcode:
- 2000CMaPh.210..621G
- Keywords:
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- High Energy Physics - Theory
- E-Print:
- 26 pages, harvmac, no figures