Asymmetric Orbifolds, Rank Reduction and Heterotic Islands
Asymmetric Orbifolds, Rank Reduction and Heterotic Islands
We consider toroidal asymmetric orbifolds of the heterotic string preserving all 16 supercharges, developing a general formalism to study components of the moduli space characterized by rank reduction of the gauge group. In particular we construct six- and four-dimensional heterotic islands with no massless moduli other than the dilaton. The …