From QED${}_3$ to Self-Dual Multicriticality in the Fradkin-Shenker Model

Thomas T. Dumitrescu, Pierluigi Niro, Ryan Thorngren

We consider the Fradkin-Shenker ${\mathbb{Z}}_2$ gauge-Higgs lattice model in 2+1 dimensions, i.e. the toric code deformed by an in-plane magnetic field. Its phase diagram contains…