Chiral N=1 4d Orientifolds with D-branes at Angles
Gabriele Honecker
Abstract
D6-branes intersecting at angles allow for phenomenologically appealing constructions of four dimensional string theory vacua. While it is straightforward to obtain non-supersymmetric realizations of the standard model, supersymmetric and stable models with three generations and no exotic chiral matter require more involved orbifold constructions. The T6/(Z4 x Z2 x OmegaR) case is discussed in detail. Other orbifolds including fractional D6-branes are treated briefly.
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