Critical points between obstructed atomic insulators in (2+1)D can realize stable QED3 when microscopic lattice symmetries suppress monopoles.
Fromthe bipartite nature of the lattice, there is an adiabatic de- formation to an effective QCD3 theory that necessitates the existence of the trivial monopoleRe[ϕ1]
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When Wannier centers jump: Critical points between atomic insulating phases
Critical points between obstructed atomic insulators in (2+1)D can realize stable QED3 when microscopic lattice symmetries suppress monopoles.