Phase Diagram of S=1/2 Antiferromagnetic XXZ Chain with Next-Nearest-Neighbor Interactions
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概要
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We numerically investigate the critical lines of the fluid-dimer and the Neel-dimer transitions of the S=1/2 antiferromagnetic XXZ chain with next-nearest interactions, assuming the asymptotic behavior to be determined by the quantum sine-Gordon model. Our result is different from that of Tonegawa, Harada and Kaburagi, who used the phenomenological renormalization group (PRG). We show that the PRG may lead to a false critical point when it is applied to the Kosterlitz-Thouless-type transition.
- 社団法人日本物理学会の論文
- 1993-04-15
著者
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OKAMOTO Kiyomi
Department of Physics, Tokyo Institute of Technology
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Okamoto K
Tokyo Inst. Technol. Tokyo
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Okamoto Kiyomi
Department Of Microbiology Kyoto Pharmaceutical University
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Nomura K
Department Of Communications And Integrated Systems Tokyo Institute Of Technology
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Nomura Kiyohide
Department of Physics, Tokyo Institute of Technology
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Okamoto Kiyomi
Department Of Applied Physics Faculty Of Science Tokyo Institute Of Technology
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Nomura Kiyohide
Department Of Physics Kyushu Univercity
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