Domain wall topological entanglement entropy

26 Aug 2020  ·  Bowen Shi, Isaac H. Kim ·

We study the ground-state entanglement of gapped domain walls between topologically ordered systems in two spatial dimensions. We derive a universal correction to the ground-state entanglement entropy, which is equal to the logarithm of the total quantum dimension of a set of superselection sectors localized on the domain wall. This expression is derived from the recently proposed entanglement bootstrap method.

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Strongly Correlated Electrons High Energy Physics - Theory Quantum Physics