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Journal Article

On Superpotentials for D-Branes in Gepner Models

MPS-Authors

Schomerus,  Volker
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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3224.pdf
(Preprint), 291KB

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Citation

Brunner, I., & Schomerus, V. (2000). On Superpotentials for D-Branes in Gepner Models. Journal of High Energy Physics, 2000(10): 016.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-5706-6
Abstract
A large class of D-branes in Calabi-Yau spaces can be constructed at the Gepner points using the techniques of boundary conformal field theory. In this note we develop methods that allow to compute open string amplitudes for such D-branes. In particular, we present explicit formulas for the products of open string vertex operators of untwisted A-type branes. As an application we show that the boundary theories of the quintic associated with the special Lagrangian submanifolds Im omega_i z_i = 0 where omega_i^5=1 possess no continuous moduli.