Type IIB orientifolds on Gepner points

Details Type IIB orientifolds on Gepner points Type IIB orientifolds on Gepner points

2003-07-18

arxiv.org/abs/hep-th/0307183v2

JHEP 0309:067,2003

Physics

High Energy Physics

High Energy Physics - Theory

67 pages, no figures References added, typos corrected

Scientific paper

10.1088/1126-6708/2003/09/067

We study various aspects of orientifold projections of Type IIB closed string theory on Gepner points in different dimensions. The open string sector is introduced, in the usual constructive way, in order to cancel RR charges carried by orientifold planes. Moddings by cyclic permutations of the internal N=2 superconformal blocks as well as by discrete phase symmetries are implemented. Reduction in the number of generations, breaking or enhancements of gauge symmetries and topology changes are shown to be induced by such moddings. Antibranes sector is also considered; in particular we show how non supersymmetric models with antibranes and free of closed and open tachyons do appear in this context. A systematic study of consistent models in D=8 dimensions and some illustrative examples in D=6 and D=4 dimensions are presented.

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