Three-Body Problem in the One-Dimensional Hubbard Model
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概要
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Electron correlation is studied in the special case of a single reversed spin in anotherwise fully aligned band in the one-dimensional Hubbard model for thepurpose of examining our previous theory which exactly takes account of thethree-body correlation. The importance of the three-body correlation is de-monstrated through a comparison of our results with those of exact theories.The ground-state energy and the single particle spectra are in good agreementwith McGuire-Lieb-Wu's exact solution and also with exact numerical solutionsfor finite size systems over a wide range of the intraatomic Coulomb integral andthe electron number. The properties of the ground state are studied in detailthrough the calculation of pair correlation functions.
- 社団法人日本物理学会の論文
- 1985-01-15
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