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arXiv · hep-th/9912147

D-Branes on K3-Fibrations

P. Kaste·W. Lerche·C. A. Lutken·J. Walcher
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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.

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P. Kaste, W. Lerche, C. A. Lutken, J. Walcher. 2000-01-11. D-Branes on K3-Fibrations. https://doi.org/10.1016/s0550-3213(00)00306-0

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