论文摘要
We investigate the behavior for the Lyapunov exponent around the band center in one-dimensional Anderson model with weak disorder. Using a parametrization method we derive the corresponding differential equation and solve the associated invariant distribution. We obtain the coe?cient for the leading correction term for small energy in band center anomaly. A high precision Pade′ approximation formula is applied to fully amend the anomalous behavior of Lyapunov exponent near band center.
论文目录
文章来源
类型: 期刊论文
作者: 冯德龙,康凯,覃绍京,王垂林
来源: Communications in Theoretical Physics 2019年04期
年度: 2019
分类: 基础科学
专业: 数学,物理学
单位: CAS Key Laboratory Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences,School of Physical Science, University of Chinese Academy of Science,Institute of Materials, China Academy of Engineering Physics,China Center of Advanced Science and Technology
基金: Supported by National Natural Science Foundation of China under Grant Nos.1121403 and 11745006
分类号: O413.1;O175
页码: 463-467
总页数: 5
文件大小: 433K
下载量: 7
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