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摘要翻译：
将二维正方形晶格上经典XY模型的自旋-自旋关联函数的高温展开式从21阶扩展到24阶，并对其进行了分析，改进了临界参数的估计。
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英文标题：
《High-temperature expansions through order 24 for the two-dimensional
classical XY model on the square lattice》
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作者：
P. Butera and M. Pernici
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：High Energy Physics - Lattice 高能物理-晶格
分类描述：Lattice field theory. Phenomenology from lattice field theory. Algorithms for lattice field theory. Hardware for lattice field theory.
晶格场论。从晶格场论到现象学。格场论的算法。晶格场论硬件。
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一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
The high-temperature expansion of the spin-spin correlation function of the two-dimensional classical XY (planar rotator) model on the square lattice is extended by three terms, from order 21 through order 24, and analyzed to improve the estimates of the critical parameters.
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PDF链接：
https://arxiv.org/pdf/710.0338
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