Algebraic equation of motion approach for solving the Anderson model  

作　　者：杜厚旻 刘玉良 Hou-Min Du;Yu-Liang Liu(Department of Physics,Renmin University of China,Beijing 100872,China)

机构地区：[1]Department of Physics,Renmin University of China,Beijing 100872,China

出　　处：《Chinese Physics B》2023年第4期627-633,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11974420)。

摘　　要：Based on the algebraic equation of motion(AEOM)approach,we have studied the single-impurity Anderson model by analytically solving the AEOM of the f-electron one-particle Green function in the Kondo limit.The related spectral function satisfies the sum rule and shows that there is a well-known three-peak structure at zero temperature.In the low energy limit,we obtain the analytical formula of the Kondo temperature that is the same as the exact solution in form except for a prefactor.We also show that the shape of the Kondo resonance is the Lorentzian form and the corresponding weight is proportional to the spin-flip correlation function.

关 键 词：Anderson model multiple-point correlation function spin-flip correlation function 

分 类 号：O411[理学—理论物理]