计算物理 ›› 1995, Vol. 12 ›› Issue (2): 215-218.
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陈锋, 应和平, 徐铁峰, 李文铸
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Chen Feng, Ying Heping, Xu Tiefeng, Li Wenzhu
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摘要： 用巨正则量子Monte Carlo方法,计算了二维单带Hubbard模型的局域磁矩、磁化率、交错磁化率和内能等物理量.结果表明,用巨正则量子Monte Carlo方法能够统一地研究Hubbard模型的关联强度从弱至强区域的性质,它是处理强关联多体系统的有效方法.
关键词: 格点系统, 量子Monte Carlo方法, Hubbard模型
Abstract: The work discussed algorithm of grand canonical quantum Monte Carlo method for the one-band two-dimensional Hubbard model, and calculated local magnetic moment, magnetic susceptibility, staggered magnetic susceptibility and the internal energy of the model. Results show that grand canonical quantum Monte Carlo method is very effective in dealing with Hubbard model from weak to strong correlation rigim, and also in dealing with many——body problems with strong correlation.
Key words: lattice systems, quantum Monte Carlo, Hubbard model
中图分类号:
O413
陈锋, 应和平, 徐铁峰, 李文铸. 巨正则量子Monte Carlo方法和二维Hubbard模型的研究[J]. 计算物理, 1995, 12(2): 215-218.
Chen Feng, Ying Heping, Xu Tiefeng, Li Wenzhu. THE GRAND CANONICAL QUANTUM MONTE CARLO METHOD AND THE TWO-DIMENSIONAL HUBBARD MODEL[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1995, 12(2): 215-218.
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