Orientifolds of Gepner Models

Details Orientifolds of Gepner Models Orientifolds of Gepner Models

2004-01-20

arxiv.org/abs/hep-th/0401137v1

JHEP 0702:001,2007

Physics

High Energy Physics

High Energy Physics - Theory

142 pages

Scientific paper

10.1088/1126-6708/2007/02/001

We systematically construct and study Type II Orientifolds based on Gepner models which have N=1 supersymmetry in 3+1 dimensions. We classify the parity symmetries and construct the crosscap states. We write down the conditions that a configuration of rational branes must satisfy for consistency (tadpole cancellation and rank constraints) and spacetime supersymmetry. For certain cases, including Type IIB orientifolds of the quintic and a two parameter model, one can find all solutions in this class. Depending on the parity, the number of vacua can be large, of the order of 10^{10}-10^{13}. For other models, it is hard to find all solutions but special solutions can be found -- some of them are chiral. We also make comparison with the large volume regime and obtain a perfect match. Through this study, we find a number of new features of Type II orientifolds, including the structure of moduli space and the change in the type of O-planes under navigation through non-geometric phases.

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