Non-Factorisable Z2 times Z2 Heterotic Orbifold Models and Yukawa Couplings

Stefan Forste, Tatsuo Kobayashi, Hiroshi Ohki +1

We classify compactification lattices for supersymmetric Z2 times Z2 orbifolds. These lattices include factorisable as well as non-factorisable six-tori. Different models lead to d…