Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-09-17
Phys. Rev. Lett. 103, 261601 (2009)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, v2: published version
Scientific paper
10.1103/PhysRevLett.103.261601
We generalize the topological entanglement entropy to a family of topological Renyi entropies parametrized by a parameter alpha, in an attempt to find new invariants for distinguishing topologically ordered phases. We show that, surprisingly, all topological Renyi entropies are the same, independent of alpha for all non-chiral topological phases. This independence shows that topologically ordered ground-state wavefunctions have reduced density matrices with a certain simple structure, and no additional universal information can be extracted from the entanglement spectrum.
Flammia Steven T.
Hamma Alioscia
Hughes Taylor L.
Wen Xiao Gang
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