K-theoretic matching of brane charges in S- and U-duality
High Energy Physics - Theory
2013-10-11 v3 K-Theory and Homology
Abstract
We discuss K-theoretic matching of D-brane charges in the string duality between type I on the 4-torus and type IIA on a K3 surface. This case is more complex than the familiar case of IIA/IIB duality, which is already well understood, but it turns out that replacing K3 by its orbifold blow-down seems largely to resolve the apparent problems with the theory. In particular, this allows for precise matching of 2-torsion brane charges.
Keywords
Cite
@article{arxiv.1007.1202,
title = {K-theoretic matching of brane charges in S- and U-duality},
author = {Stefan Mendez-Diez and Jonathan Rosenberg},
journal= {arXiv preprint arXiv:1007.1202},
year = {2013}
}
Comments
23 pages. Added more references and discussion, and corrected a minor error in spectral sequence argument in section 3. (Results unaffected.)