D-Branes on K3-Fibrations
High Energy Physics - Theory
2008-11-26 v3
Abstract
B-type D-branes are constructed on two different K3-fibrations over IP_1 using boundary conformal field theory at the rational Gepner points of these models. The microscopic CFT charges are compared with the Ramond charges of D-branes wrapped on holomorphic cycles of the corresponding Calabi-Yau manifold. We study in particular D4-branes and bundles localized on the K3 fibers, and find from CFT that each irreducible component of a bundle on K3 gains one modulus upon fibration over IP_1. This is in agreement with expectations and so provides a further test of the boundary CFT.
Keywords
Cite
@article{arxiv.hep-th/9912147,
title = {D-Branes on K3-Fibrations},
author = {P. Kaste and W. Lerche and C. A. Lutken and J. Walcher},
journal= {arXiv preprint arXiv:hep-th/9912147},
year = {2008}
}
Comments
16p, harvmac, tables.tex; typos corrected, refs added, discussion about moduli spaces improved