Cusp Singularity in the Magnetization Curve of 1D Quantum Spin Systems
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概要
- 論文の詳細を見る
We give a short review of the cusp singularity in the magnetization curve of 1D quantum spin systems. We show that the cusp singularity appears for a certain class of nonintegrable frustrated spin systems, using the density matrix renormaziation group method. We also discuss the cusp appearance mechanism on the basis of the one particle dispersion curve of the elementary excitation, where the shape change of the dispersion curve induced by the frustrated interaction plays an essential role.
- 理論物理学刊行会の論文
- 2002-06-28
著者
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Okunishi Kouichi
Department Of Physics Niigata University
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Okunishi Kouichi
Department Of Physics Faculty Of Science Niigata Univeristy
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OKUNISHI Kouichi
Department of Applied Physics, Graduate School of Engineering Osaka University
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