Pairing correlations and susceptibilities of the one-dimensional Hubbard model

Using a quantum Monte-Carlo method, we calculate the pairing correlation functions and pairing susceptibilities of the one-dimensional Hubbard model for half-filling as well as less than half-filling. The dependence of these quantities on system size and Coulomb repulsion is discussed. Spin and char...

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Bibliographic Details
Published in:Solid state communications 1989-02, Vol.69 (8), p.837-841
Main Author: Costi, T.A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states
Exact sciences and technology
Physics
Theories and models of many electron systems
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Summary:Using a quantum Monte-Carlo method, we calculate the pairing correlation functions and pairing susceptibilities of the one-dimensional Hubbard model for half-filling as well as less than half-filling. The dependence of these quantities on system size and Coulomb repulsion is discussed. Spin and charge susceptibilities are also discussed. As in two dimensions [20] we also find in one dimension an enhancement of the extended singlet pairing correlation function (for q = 0) at U t ≈ 3 . All q = 0 pairing susceptibilities are, however, suppressed with increasing U.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(89)90275-5