Exact Dynamics of the SU(K) Haldane-Shastry Model : Condensed Matter: Electronic Properties, etc.
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概要
- 論文の詳細を見る
The dynamical structure factor S(q, ω) of the SU(K) (K = 2, 3, 4) Haldane-Shastry model is derived exactly at zero temperature for arbitrary size of the system. The result is interpreted in terms of free quasi-particles which are generalization of spinons in the SU(2) case; the excited states relevant to S(q, ω) consist of K quasi-particles each of which is characterized by a set of K - 1 quantum numbers. Near the boundaries of the region where S(q, ω) is nonzero, S(q, ω) shows the power-law singularity. It is found that the divergent singularity occurs only in the lowest edges starting from (q, ω) = (0, 0) toward positive and negative q. The analytic result is checked numerically for finite systems via exact diagonalization and recursion methods.
- 社団法人日本物理学会の論文
- 2000-03-15
著者
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KURAMOTO Yoshio
Department of Physics, Tohoku University
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Yamamoto S
Japan Atomic Energy Research Institute Department Of Fusion Plasma Research Experimental Plasma Phys
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Yamabe T
Tokyo Inst. Technol. Tokyo Jpn
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Yamamoto T
Institute For Solid State Physics The University Of Tokyo
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Yasuda T
Graduate School Of Science Osaka University
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Kuramoto Yoshio
Department Of Mathematics And Statistics University Of Melbourne:department Of Physics Tohoku Univer
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Kuramoto Yoshio
Department Of Applied Physics Tohoku University
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ARIKAWA Mitsuhiro
Department of Mathematics and Statistics, University of Melbourne
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YAMAMOTO Takashi
Max-Planck-Institut fur Physik komplexer Systeme
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SAIGA Yasuhiro
Institute for Solid State Physics, University of Tokyo
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Yamamoto T
Tsukuba Research Center Sanyo Electric Co. Ltd.
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Arikawa Mitsuhiro
Department Of Mathematics And Statistics University Of Melbourne:max-planck-institut Fur Physik Komp
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Yamamoto Tokujirou
Department Of Materials Science And Engineering Kyoto University
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Yamamoto T
Japan Atomic Energy Research Inst. Tokai
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Yamamoto T
Institute For Molecular Science And Graduate University For Advanced Studies:(present Office)riken
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Saiga Y
Department Of Mathematics And Statistics University Of Melbourne:department Of Physics Tokyo Institu
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Saiga Yasuhiro
Institute For Solid State Physics University Of Tokyo
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Kuramoto Yoshio
Department Of Applied Physics Faculty Of Engineering Tohoku University
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Yamamoto Takayoshi
The Institute Of Scientific And Industrial Research Osaka University
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YAMAMOTO Takashi/SAIGA
Max-Planck-Institut fur Physik komplexer Systeme/Institute for Solid State Physics, University of Tokyo/Department of Physics, Tohoku University/Department of Physics, Tohoku University
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