Non-Abelian topological spin liquids from arrays of quantum wires or spin chains

We construct two-dimensional non-Abelian topologically ordered states by strongly coupling arrays of one-dimensional quantum wires via interactions. In our scheme, all charge degrees of freedom are gapped, so the construction can use either quantum wires or quantum spin chains as building blocks, wi...

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Veröffentlicht in:Physical review. B 2016-05, Vol.93 (20), Article 205123
Hauptverfasser: Huang, Po-Hao, Chen, Jyong-Hao, Gomes, Pedro R. S., Neupert, Titus, Chamon, Claudio, Mudry, Christopher
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Sprache:eng
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Zusammenfassung:We construct two-dimensional non-Abelian topologically ordered states by strongly coupling arrays of one-dimensional quantum wires via interactions. In our scheme, all charge degrees of freedom are gapped, so the construction can use either quantum wires or quantum spin chains as building blocks, with the same end result. The construction gaps the degrees of freedom in the bulk, while leaving decoupled states at the edges that are described by conformal field theories (CFT) in (1+1)-dimensional space and time. We consider both the cases where time-reversal symmetry (TRS) is present or absent. When TRS is absent, the edge states are chiral and stable. We prescribe, in particular, how to arrive at all the edge states described by the unitary CFT minimal models with central charges c
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.93.205123