文章基本信息

标题：Asymptotic freedom with discrete spin variables?
本地全文：下载
作者：P. Hasenfratz ; F. Niedermayer
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2001
卷号：2001
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We study the critical behaviour of the 2d dodecahedron spin model and investigate the conjecture that the discrete model describes the same continuum theory as the O(3) non-linear sigma model. In particular, we found that the anisotropy of the magnetization A(z) measured in a xed physical volume decreases with increasing correlation length, at least up to 1000.