2024-04-19T08:17:58Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00002258
2022-12-15T03:35:07Z
176:488:489
453:454
Unambiguous relationship between the Hubbard, t-J and d-p models in One-dimension based on the Luttinger liquid Theory
Unambiguous relationship between the Hubbard, t-J and d-p models in One-dimension based on the Luttinger liquid Theory
Sano, Kazuhiro
Ono, Yoshiaki
Luttinger liquid
d–p model
Hubbard model
t–J model
We examine the one-dimensional (1D) d–p model in comparison with typical 1D models such as the 1D Hubbard model and the 1D t–J model using the numerical diagonalization method combined with the Luttinger liquid theory. We calculate the spin velocity vσ, the charge velocity vρ and the Luttinger liquid parameter Kρ for each model. Using these parameters, a relationship between the models is obtained unambiguously. We find that the d–p model can be described by the Hubbard model in the wide parameter region, while it can be described by the t–J model only in the strong coupling limit.
Elsevier
2003-05
eng
journal article
http://hdl.handle.net/10191/26913
https://niigata-u.repo.nii.ac.jp/records/2258
info:doi/10.1016/S0921-4534(02)02662-X
AA11461984
09214534
Physica. C, Superconductivity
Physica. C, Superconductivity
388-389
84
85
https://niigata-u.repo.nii.ac.jp/record/2258/files/1018.pdf
application/pdf
78.8 kB
2019-07-29