Orbifolds from $\mathrm{Sp}(4,\mathbb{Z})$ and their modular symmetries

Hans Peter Nilles, Saul Ramos-Sanchez, Andreas Trautner +1

The incorporation of Wilson lines leads to an extension of the modular symmetries of string compactification beyond $\mathrm{SL}(2,\mathbb{Z})$. In the simplest case with one Wilson…