Anomalous dimensions of composite operators near two dimensions for ferromagnets with O ( n ) symmetry
Anomalous dimensions of composite operators near two dimensions for ferromagnets with O ( n ) symmetry
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O(n)对称性铁磁体近二维复合算子的反常维数
DOI：
10.1103/physrevb.14.4976
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
J. Guillou
中科院分区：
文献类型：
--
作者：
É. Brézin;J. Zinn;J. Guillou
在二维附近考虑了n-向量模型（n> 2）的相关破缺算子。有无限多的相关算子;所有的本征算子都被确定，它们的反常维数被计算到d− 2的二阶。还考虑了对标度的各向同性修正。它们对应于对称无关算子。其中五个在二维附近占主导地位;第一个给出了标度修正指数ω，在这里以d− 2为单位计算。
Relevant symmetry-breaking operators for n-vector models (n> 2) are considered near two dimensions. There is an infinite set of relevant operators; all the eigenoperators are determined and their anomalous dimension calculated to second order in d− 2. Isotropic corrections to scaling are also considered. They correspond to symmetric irrelevant operators. Five of them dominate near two dimensions; the leading one gives the correction-to-scaling exponent ω, calculated here at first order in d− 2.