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arXiv 0712.0273cond-mat.str-elcond-mat.stat-mech
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费米子实现的二维格点模型的特征:Ising和$XYZ$模型

Characteristics of 2D lattice models from fermionic realization: Ising and $XYZ$ models

Sh. A. Khachatryan, A. G. Sedrakyan

摘要:

我们发展了一种场论方法来计算经典的二维模型,特别是二维伊辛模型(2DIM)和$XYZ$模型,它可以简单地应用于各种关联函数的计算。在此框架下计算了2DIM和$XY$模型的配分函数。自旋-自旋关联函数的行列式表示是由玻尔兹曼权重的费米子实现导出的。该方法还允许制定的配分函数的2DIM在存在外部磁场。

英文摘要:

We develop a field theoretical approach to the classical two-dimensional models, particularly to 2D Ising model (2DIM) and $XYZ$ model, which is simple to apply for calculation of various correlation functions. We calculate the partition function of 2DIM and $XY$ model within the developed framework. Determinant representation of spin-spin correlation functions is derived using fermionic realization for the Boltzmann weights. The approach also allows formulation of the partition function of 2DIM in the presence of an external magnetic field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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