Spectra of 4D, N=1 Type I String Vacua on Non-Toroidal CY Threefolds
Ralph Blumenhagen, Andreas Wisskirchen
Abstract
We compute the massless spectra of some four dimensional, N=1 supersymmetric compactifications of the type I string. The backgrounds are non-toroidal Calabi-Yau manifolds described at special points in moduli space by Gepner models. Surprisingly, the abstract conformal field theory computation reveals Chan-Paton gauge groups as big as SO(12) x SO(20) or SO(8)4 x SO(4)3.
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