自洽单圈近似中的Kondo交叉
凝聚态物理
2009-10-22 v1
摘要
通过扩展先前的展开技术，计算了磁场中一般单杂质Kondo模型的自由能和磁化强度：鞍点自洽地确定到阶。通过这种简单方法获得的普适场依赖磁化强度被解析地证明在和两个极限下都是渐近精确的。对于一般的“-电子”填充，除半填充外，曲线从弱耦合到强耦合极限连续交叉，但对于中等，在交叉区域高估了曲率。磁Wilson交叉数被计算以供娱乐。我们的结果明确验证了参数在绝热延拓下是非奇异的。
引用
@article{arxiv.cond-mat/9309046,
title = {Kondo Crossover In The Self-Consistent One-Loop Approximation"},
author = {Junwu Gan},
journal= {arXiv preprint arXiv:cond-mat/9309046},
year = {2009}
}
备注
19 pages in REVTEX 2.0, 2 tables, 3 figures. Submitted to Phys. Rev. B. The reference .bbl file is appended at the end. 3 figures in postscript files can be obtained at [email protected]. The filename is gan.figures.tar.z and it's compressed. You can uncompress it by using commands: "uncompress gan.figures.tar.z" and "tar xvf gan.figures.tar". UBC