Universality class of O(N) models.
Universality class of O(N) models.
复制标题
O(N) 模型的通用性类别。
DOI:
10.1103/physrevb.54.7177
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发表时间:
1995
期刊:
影响因子:
--
通讯作者:
Seiler
中科院分区:
文献类型:
--
作者:
Patrascioiu;Seiler
We point out that existing numerical data on the correlation length and magnetic susceptibility suggest that the two dimensional $O(3)$ model with standard action has critical exponent $\eta=1/4$, which is inconsistent with asymptotic freedom. This value of $\eta$ is also different from the one of the Wess-Zumino-Novikov-Witten model that is supposed to correspond to the $O(3)$ model at $\theta=\pi$.