| 二维玻色系统超流密度的重整化群研究 |
| |
| 引用本文： | 何培松,吴成真,陈宇,田光善.二维玻色系统超流密度的重整化群研究[J].北京大学学报(自然科学版),2011,47(3):389-396. |
| |
| 作者姓名： | 何培松 吴成真 陈宇 田光善 |
| |
| 作者单位： | 北京大学物理学院, 北京 100871; |
| |
| 基金项目： | 国家自然科学基金(10874003)资助 |
| |
| 摘 要： | 利用Holzmann-Baym超流密度公式以及准确到一圈图的重整化群方法,计算了零温下二维弱相互作用玻色体系的超流密度和超流刚度。计算表明,当高能涨落的贡献占主导地位时,超流密度与超流刚度对化学势的依赖关系会呈现标度行为, 与前人的研究结果相一致。
|
| 关 键 词： | 二维玻色子体系 超流密度和刚度 重整化群方法 |
| 收稿时间： | 2010-07-31 |
Renormalization Group Study of Superfluid Density in Two-Dimensional Boson System |
| |
| HE Peisong,OH Sungjin,CHEN Yu,TIAN Guangshan.Renormalization Group Study of Superfluid Density in Two-Dimensional Boson System[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2011,47(3):389-396. |
| |
| Authors: | HE Peisong OH Sungjin CHEN Yu TIAN Guangshan |
| |
| Institution: | School of Physics, Peking University, Beijing 100871; |
| |
| Abstract: | Superfluid density and stiffness of two-dimensional weakly interacting Boson system at zero temperature are calculated by one-loop renormalization group method using Holzmann-Baym formula. The result shows that when the contributions of high energy fluctuations dominate, both superfluid density and superfluid stiffness exhibit scaling behavior with respect to chemical potential. This result is qualitatively consistent with other researchers’result. |
| |
| Keywords: | two-dimensional Boson system superfluid density and stiffness renormalization group |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《北京大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《北京大学学报(自然科学版)》下载免费的PDF全文 |
