paper

Supersymmetric Orientifolds of Gepner Models

arXiv:hep-th/0310244 · doi:10.1088/1126-6708/2003/11/055

Abstract

Supersymmetric orientifolds of four dimensional Gepner Models are constructed in a systematic way. For all levels of the Gepner model being odd the generic expression for both the A-type and the B-type Klein bottle amplitude is derived. The appearing massless tadpoles are canceled by introducing appropriate boundary states of Recknagel/Schomerus(RS). After determining the Moebius strip amplitude we extract general expressions for the tadpole cancellation conditions. We discuss the issue of chirality for such supersymmetric orientifold models and finally present a couple of examples in detail.

38 pages, TeX harvmac, ref. added

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