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Spectral Weight of the Hubbard Model through Cluster Perturbation Theory

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Sénéchal, D., Perez, D., Pioro-Ladrière, M.·2000·Physical Review Letters

Abstract

We calculate the spectral weight of the one- and two-dimensional Hubbard models by performing exact diagonalizations of finite clusters and treating intercluster hopping with perturbation theory. Even with relatively modest clusters (e.g., 12 sites), the spectra thus obtained give an accurate description of the exact results. Spin-charge separation (i.e., an extended spectral weight bounded by singularities dispersing with wave vector) is clearly recognized in the one-dimensional Hubbard model, and so is extended spectral weight in the two-dimensional Hubbard model.

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Metadata

Authors
Sénéchal, D., Perez, D., & Pioro-Ladrière, M.
Venue
Physical Review Letters
Published
2000-01-17
Volume
84
Issue
3
Pages
522-525
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2043827934
Cited by
402
References
0
FWCI
6.01
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Spectral Weight of the Hubbard Model through Cluster Perturbation Theory. https://app.cochat.ai/papers/10.1103/physrevlett.84.522
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Sénéchal, D., Perez, D., & Pioro-Ladrière, M. (2000). Spectral Weight of the Hubbard Model through Cluster Perturbation Theory. Physical Review Letters. https://doi.org/10.1103/physrevlett.84.522

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