Asymptotic correlation functions in the one-dimensional Hubbard model with applications to high-Tc superconductivity
Yong Ren, P. W. Anderson
DOI 10.1103/PhysRevB.48.16662 · Physical Review B
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Abstract
The one-dimensional Hubbard model with repulsive interaction is studied. We calculate the asymptotic correlation functions in the less-than-half-filled band case. In particular, our approach centers on the large-U wave function and emphasizes the finite phase shifts on the Fermi surface. This is important since the concept of finite phase shifts can be easily applied to higher dimensions. We then discuss the non-Fermi-liquid behavior of this model and the relevance to the understanding of the two-dimensional Hubbard model, which is believed to give a good description of the high-Tc superconductors.
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