SU(2)格点规范理论是自旋玻璃吗？
高能物理 - 格点
2010-03-29 v2 统计力学
摘要
在通常用于自旋玻璃的双实副本方法背景下，为SU(2)格点规范理论构造了一个新的序参量。该序参量对规范对称性的全局Z2子群敏感，该子群在β = 4/g^2 = 1.96 ± 0.01处自发破缺。无需规范固定。有限尺寸标度与从高阶顺磁体到自旋玻璃的转变一致，临界指数ν = 0.99 ± 0.13。该转变的存在表明在更高β处应存在从自旋玻璃到铁磁体的第二次转变。
引用
@article{arxiv.0907.4102,
title = {Is SU(2) lattice gauge theory a spin glass?},
author = {Michael Grady},
journal= {arXiv preprint arXiv:0907.4102},
year = {2010}
}
备注
13 pages, 6 eps figures. Study repeated with better algorithm and higher equilibration. A detailed study of equilibration is performed to show equilibration is adequate. Some results in critical region modified. Results outside critical region unchanged. Conclusions unchanged.