An entropic invariant for 2D gapped quantum phases

We introduce an entropic quantity for two-dimensional quantum spin systems to characterize gapped quantum phases modeled by local commuting projector code Hamiltonians. The definition is based on a recently introduced specific operator algebra defined on an annular region, which encodes the supersel...

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Veröffentlicht in:	Journal of physics. A, Mathematical and theoretical Mathematical and theoretical, 2020-02, Vol.53 (8), p.85302
Hauptverfasser:	Kato, Kohtaro, Naaijkens, Pieter
Format:	Artikel
Sprache:	eng
Schlagworte:	operator algebra quantum double quantum information topological entanglement entropy topologically ordered phase
Online-Zugang:	Volltext
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