First-order photon condensation in magnetic cavities: A two-leg ladder model
First-order photon condensation in magnetic cavities: A two-leg ladder model
We consider a model of free fermions in a ladder geometry coupled to a non-uniform cavity mode via Peierls substitution. Since the cavity mode generates a magnetic field, no-go theorems on spontaneous photon condensation do not apply, and we indeed observe a phase transition to a photon condensed phase characterized …