Partially Solvable Anisotropic t-J Model with Long-Range Interactions
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概要
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A new anisotropic t-J model in one dimension is proposed which has long-range hopping andexchange. This t-J model is only partially solvable in contrast to known integrable models withlong-range interaction. In the high-density limit the model reduces to the XXZ chain with thelong-range exchange. Some exact eigenfunctions are shown to be of the Jastrow type if certainconditions for an anisotropy parameter are satisfied. The ground state as well as the excitationspectrum for various values of the anisotropy parameter and filling are derived numerically. Itis found that the Jastrow-type wave function is an excellent trial function for any value of theanisotropy parameter.
- 社団法人日本物理学会の論文
- 1996-08-15
著者
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SAIGA Yasuhiro
Department of Mathematics and Statistics, University of Melbourne
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Kato Yusuke
Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences Univers
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Saiga Yasuhiro
Department Of Physics Tohoku University
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Kuramoto Yoshio
Department Of Applied Physics Faculty Of Engineering Tohoku University
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Kato Yusuke
Department Of Physics Tohoku University
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