D-branes on K3-fibrations

被引：40

作者：

Kaste, P ^{[1
]}

Lerche, W

Lütken, CA

Walcher, J

机构：

[1] CERN, CH-1211 Geneva 23, Switzerland

[2] ETH Honggerberg, Inst Theoret Phys, CH-8093 Zurich, Switzerland

来源：

NUCLEAR PHYSICS B | 2000年 / 582卷 / 1-3期

关键词：

D-branes; boundary CFT; Calabi-Yau compactification;

D O I：

10.1016/S0550-3213(00)00306-0

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

B-type D-branes are constructed on two different K3-fibrations over P-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 fr om CFT that each irreducible component of a bundle on K3 gains one modulus upon fibration over P-1. This is in agreement with expectations and so provides a further test of the boundary CFT approach to D-brane physics. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：203 / 215

页数：13

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