D-branes at Singular Curves of Calabi-Yau Compactifications

Abstract

We study the Gepner model description of D-branes in Calabi-Yau manifolds with singular curves. From a geometrical point of view, the resolution of singularities leads to additional homology cycles around which branes can wrap. Using techniques from conformal field theory we address the construction of boundary states for branes wrapping additional 3-cycles on the resolved Calabi-Yau manifold. Explicit formulas are provided for Z_2 singular curves.

25 pages, latex

References in corpus (3)

• Symmetry breaking boundaries II. More structures; examples
• D-branes on some one- and two-parameter Calabi-Yau hypersurfaces
• D-Branes on K3-Fibrations

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