Authors: Stefan Förste Gabriele Honecker
Publish Date: 2011/01/20
Volume: 2011, Issue: 1, Pages: 91-
Abstract
We give a complete classification of T6 left/ left mathbbZ 2 times mathbbZ 2M times Omega mathcalR right right orientifolds on factorisable tori and rigid D6branes on them The analysis includes the supersymmetry RR tadpole cancellation and Ktheory conditions and complete massless open and closed string spectrum ie nonchiral as well as chiral for fractional or rigid D6branes for all inequivalent compactification lattices without and with discrete torsion We give examples for each orbifold background which show that on mathbbZ 2 times mathbbZ 6 and mathbbZ 2 times mathbbZ 6prime there exist completely rigid D6branes despite the selfintersections of orbifold image cycles This opens up a new avenue for improved Standard Model building On the other hand we show that Standard and GUT model building on the mathbbZ 2 times mathbbZ 4 background is ruled out by simple arguments
Keywords: