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Study of Spin-One Heisenberg Model with Single-Ion Anisotropy by variational Curnulant Expansion |
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| Authors: | WANG Qing CHEN Tianlun |
| Affiliation: | 1. Department of Physics, Nankai university, Tiahjin 300071, China;2. CCAST (World Laboratory), P. O. Box 8730, Beijing 100080, China |
| Abstract: | We study spin-one Heiseibergm odel with single-yon anisotropy for both easy-axis and easy-plane cases. Critical temperatures are obtained for different 3-dimensional lattices. Choice of trial action S0 is discussed. |
| Keywords: | single-ion anisotropy VCE Heisenberg model critical temperature |
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