The periodic Anderson model for intermediate valence within the coherent potential approximation

1981 ◽  
Vol 52 (3) ◽  
pp. 2146-2148 ◽  
Author(s):  
J. W. Schweitzer ◽  
R. L. Graham
Keyword(s):  
Anderson Model ◽  
Coherent Potential Approximation ◽  
Periodic Anderson Model ◽  
Intermediate Valence ◽  
Potential Approximation

The Equivalence of CPA and Hubbard-III-I Approximation in the Two-Band Hubbard Model

1997 ◽  
Vol 11 (18) ◽  
pp. 779-784
Author(s):  
Hoang Anh Tuan
Keyword(s):  
Hubbard Model ◽  
Anderson Model ◽  
Equation Of Motion ◽  
Coherent Potential Approximation ◽  
The Self ◽  
Periodic Anderson Model ◽  
Potential Approximation ◽  
Scattering Correction

We study a two-band Hubbard model using the Coherent Potential Approximation (CPA) and equation of motion decoupling scheme with scattering correction (Hubbard-III-I approximation). We show that above two approximations are completely equivalent to each other for the Periodic Anderson Model (PAM) as well as for the Self-doped Mott System (SMS).

scholarly journals Anomalous Transport: A Mathematical Framework

1998 ◽  
Vol 10 (01) ◽  
pp. 1-46 ◽  
Author(s):  
H. Schulz-Baldes ◽  
J. Bellissard
Keyword(s):  
Transport Properties ◽  
Anderson Model ◽  
Coherent Potential Approximation ◽  
Anomalous Transport ◽  
Mathematical Framework ◽  
Spectral Measures ◽  
Potential Approximation ◽  
And Diffusion

We develop a mathematical framework allowing to study anomalous transport in homogeneous solids. The main tools characterizing the anomalous transport properties are spectral and diffusion exponents associated to the covariant Hamiltonians describing these media. The diffusion exponents characterize the spectral measures entering in Kubo's formula for the conductivity and hence lead to anomalies in Drude's formula. We give several formulas allowing to calculate these exponents and treat, as an example, Wegner's n-orbital model as well as the Anderson model in coherent potential approximation.

Superconducting instability in the periodic Anderson model

1998 ◽  
Vol 78 (4) ◽  
pp. 365-374 ◽  
Author(s):  
A. N.Tahvildar-Zadeh, M. H. Hettler, M
Keyword(s):  
Anderson Model ◽  
Periodic Anderson Model
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