Classical mapping for Hubbard operators: Application to the double-Anderson model

2014 ◽  
Vol 140 (20) ◽  
pp. 204106 ◽  
Author(s):  
Bin Li ◽  
William H. Miller ◽  
Tal J. Levy ◽  
Eran Rabani
Keyword(s):  
Anderson Model ◽  
Hubbard Operators

Novel 1/N Expansion for Self-Energy and Correlation Functions of the Hubbard Model

1997 ◽  
Vol 11 (08) ◽  
pp. 333-338 ◽  
Author(s):  
Miodrag L. Kulić ◽  
Roland Zeyher
Keyword(s):  
High Temperature ◽  
Anderson Model ◽  
High Temperature Superconductors ◽  
The Self ◽  
The Novel ◽  
Strong Correlations ◽  
Double Occupancy ◽  
Self Energy ◽  
Boson Theory ◽  
Hubbard Operators

The novel slave-free (i.e. without slave bosons and fermions) approach to the problem of strong correlations is used in studying the Hubbard (t-J) model, where the self-energy is expressed in terms of charge and spin vertex functions of Hubbard operators. A systematic 1/N expansion (N is the number of spin components) of the self-energy is carried out. In O(1) it gives the same quasiparticle spectrum as the slave boson theory. The next order O(1/N) of the self-energy Σ(k, ω) is calculated exactly by solving analytically the integral equations for the charge and spin vertices. As an example for the feasibility of the proposed method explicit results for Σ(k, ω) are given in the case J=0. Dealing only with observable quantities our method is transparent and easily applicable to models which exclude double occupancy on lattice sites, such as the Anderson model and the Emery model for high temperature superconductors.

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

scholarly journals Quantum boomerang effect: Beyond the standard Anderson model

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
L. Tessieri ◽  
Z. Akdeniz ◽  
N. Cherroret ◽  
D. Delande ◽  
P. Vignolo
Keyword(s):  
Anderson Model ◽  
Boomerang Effect

Limit theorems for basic states of the anderson model

1992 ◽  
Vol 26 (4) ◽  
pp. 305-307 ◽  
Author(s):  
A. Astrauskas ◽  
S. A. Molchanov
Keyword(s):  
Anderson Model ◽  
Limit Theorems ◽  
Basic States

scholarly journals From closed to open one-dimensional Anderson model: Transport versus spectral statistics

2012 ◽  
Vol 86 (1) ◽  
Author(s):  
S. Sorathia ◽  
F. M. Izrailev ◽  
V. G. Zelevinsky ◽  
G. L. Celardo
Keyword(s):  
Anderson Model ◽  
One Dimensional ◽  
Spectral Statistics
Sign in / Sign up

Export Citation Format

Share Document