Abstract
We connect a family of gauge theories (Maxwell theories with a magnetoelectric coupling ) to the family of 3D topological lattice models introduced by Walker and Wang. In particular, we show that the lattice Hamiltonians capture a certain strong-coupling limit of these gauge theories, in which the system enters a gapped (confined) phase. We discuss the relationship between the topological order exhibited by certain of these lattice Hamiltonians and the characteristic electromagnetic response of the symmetry-protected bosonic topological insulator.
1 More- Received 15 September 2014
DOI:https://doi.org/10.1103/PhysRevB.91.045134
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