Perturbational scaling theory of the induced magnetization in the impurity Anderson model

被引：16

作者：

Edwards, K. ^{[1
]}

Hewson, A. C. ^{[1
]}

Pandis, V. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Math, London SW7 2AZ, England

来源：

PHYSICAL REVIEW B | 2013年 / 87卷 / 16期

基金：

英国工程与自然科学研究理事会;

关键词：

KONDO PROBLEM; RENORMALIZATION-GROUP; EXPANSION; ALLOYS; STATES;

D O I：

10.1103/PhysRevB.87.165128

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate the effectiveness of a generalized renormalized perturbational approach to calculate the induced magnetization for the single impurity Anderson model with a strong on-site interaction, using flow equations for renormalized parameters to scale from a weak correlation to a strong correlation regime. We show that, using simple approximation schemes in different parameter regimes, remarkably accurate results can be obtained for all magnetic field values by comparing the results with those from direct numerical renormalization group and Bethe ansatz calculations. DOI: 10.1103/PhysRevB.87.165128

引用

页数：8

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