Functional Integral Approach to the Low Dimensional Antiferromagnets : Condensed Matter and Statistical Physics
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概要
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The ground-state energies of the low-dimensional antiferromagnets are calculated including the triangular lattice by the fermionic mean-field approach. These energies are, as well known, high compared with those of Neel states. For one-dimensional case, the effects of the fluctuations from the mean field are investigated by the functional integral method and these mean-field states are shown to be unstable to the dimer state. Finally, the ground-state energy is calculated by taking into account the fluctuations from the dimer state.
- 理論物理学刊行会の論文
- 1989-10-25
著者
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Yosida Kei
Department Of Physics Faculty Of Science And Technology Science University Of Tokyo
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Yoshida Kei
Department Of Science And Technology Science University Of Tokyo
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HATADA Kenji
Department of Physics, Faculty of Science and Technology Science University of Tokyo
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Hatada Kenji
Department Of Physics Faculty Of Science And Technology Science University Of Tokyo
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YOSIDA Kei
Department of Physics, Faculty of Science and Technology Science University of Tokyo
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YOSHIDA Kei
The Institute of Solid State Physics, The University of Tokyo
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