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Cited by 198

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Entanglement Entropy and the Fermi Surface

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Swingle, Brian·2010·Physical Review Letters

Abstract

Free fermions with a finite Fermi surface are known to exhibit an anomalously large entanglement entropy. The leading contribution to the entanglement entropy of a region of linear size L in d spatial dimensions is S∼L(d-1)logL, a result that should be contrasted with the usual boundary law S∼L(d-1). This term depends only on the geometry of the Fermi surface and on the boundary of the region in question. I give an intuitive account of this anomalous scaling based on a low energy description of the Fermi surface as a collection of one-dimensional gapless modes. Using this picture, I predict a violation of the boundary law in a number of other strongly correlated systems.

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Metadata

Authors
Swingle, B.
Venue
Physical Review Letters
Published
2010-07-30
Volume
105
Issue
5
Pages
050502-050502
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2082329723
Cited by
198
References
2
FWCI
5.86
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Entanglement Entropy and the Fermi Surface. https://app.cochat.ai/papers/10.1103/physrevlett.105.050502
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Swingle, B. (2010). Entanglement Entropy and the Fermi Surface. Physical Review Letters. https://doi.org/10.1103/physrevlett.105.050502

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