On Superpotentials for D-Branes in Gepner Models

Details On Superpotentials for D-Branes in Gepner Models On Superpotentials for D-Branes in Gepner Models

2000-08-24

arxiv.org/abs/hep-th/0008194v1

JHEP 0010 (2000) 016

Physics

High Energy Physics

High Energy Physics - Theory

33 pages, 2 figures

Scientific paper

10.1088/1126-6708/2000/10/016

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.

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