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arXiv · 1504.02868

Entropic Topological Invariants in Three Dimensions

Alex Bullivant·Jiannis K. Pachos
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Abstract

We evaluate the entanglement entropy of exactly solvable Hamiltonians corresponding to general families of three-dimensional topological models. We show that the modification to the entropic area law due to three-dimensional topological properties is richer than the two-dimensional case. In addition to the reduction of the entropy caused by non-zero vacuum expectation value of contractible loop operators a new topological invariant appears that increases the entropy if the model consists of non-trivially braiding anyons. As a result the three-dimensional topological entanglement entropy provides only partial information about the two entropic topological invariants.

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Alex Bullivant, Jiannis K. Pachos. 2015-04-11. Entropic Topological Invariants in Three Dimensions. https://doi.org/10.1103/physrevb.93.125111

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