On Ramond-Ramond fields and K-theory
High Energy Physics - Theory
2009-10-31 v3 Differential Geometry
Abstract
A recent paper by Moore and Witten explained that Ramond-Ramond fields in Type II superstring theory have a global meaning in K-theory. In this note we amplify and generalize some points raised in that paper. In particular, we express the coupling of the Ramond-Ramond fields to D-branes in a K-theoretic framework and show that the anomaly in this coupling exactly cancels the anomaly from the fermions on the brane, both in Type IIA and Type IIB.
Keywords
Cite
@article{arxiv.hep-th/0002027,
title = {On Ramond-Ramond fields and K-theory},
author = {D. S. Freed and M. J. Hopkins},
journal= {arXiv preprint arXiv:hep-th/0002027},
year = {2009}
}
Comments
12 pages; final revision for publication in JHEP. References added and some minor clarifications as well