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Cited by 425

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

General Relationship between the Entanglement Spectrum and the Edge State Spectrum of Topological Quantum States

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Qi, Xiao-Liang, Katsura, Hosho, Ludwig, Andreas W. W.·2012·Physical Review Letters

Abstract

We consider (2+1)-dimensional topological quantum states which possess edge states described by a chiral (1+1)-dimensional conformal field theory, such as, e.g., a general quantum Hall state. We demonstrate that for such states the reduced density matrix of a finite spatial region of the gapped topological state is a thermal density matrix of the chiral edge state conformal field theory which would appear at the spatial boundary of that region. We obtain this result by applying a physical instantaneous cut to the gapped system and by viewing the cutting process as a sudden "quantum quench" into a conformal field theory, using the tools of boundary conformal field theory. We thus provide a demonstration of the observation made by Li and Haldane about the relationship between the entanglement spectrum and the spectrum of a physical edge state.

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Metadata

Authors
Qi, X.-L., Katsura, H., & Ludwig, A. W. W.
Venue
Physical Review Letters
Published
2012-05-10
Volume
108
Issue
19
Pages
196402-196402
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2057916018
Cited by
425
References
45
FWCI
14.79
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: General Relationship between the Entanglement Spectrum and the Edge State Spectrum of Topological Quantum States. https://app.cochat.ai/papers/10.1103/physrevlett.108.196402
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Qi, X.-L., Katsura, H., & Ludwig, A. W. W. (2012). General Relationship between the Entanglement Spectrum and the Edge State Spectrum of Topological Quantum States. Physical Review Letters. https://doi.org/10.1103/physrevlett.108.196402

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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