Electrical conductivity of the narrow-half-filled-band Hubbard model with nearest-neighbor interaction

1975 ◽  
Vol 12 (6) ◽  
pp. 2189-2193 ◽  
Author(s):  
D. Cabib
Keyword(s):  
Electrical Conductivity ◽  
Hubbard Model ◽  
Nearest Neighbor ◽  
Neighbor Interaction

TWO-DIMENSIONAL QUARTER-FILLED EXTENDED HUBBARD MODEL AT STRONG COUPLING

2005 ◽  
Vol 19 (01n03) ◽  
pp. 213-216
Author(s):  
W. F. LEE ◽  
H. Q. LIN
Keyword(s):  
Hubbard Model ◽  
Correlation Functions ◽  
Nearest Neighbor ◽  
Spin Correlation ◽  
Perturbation Approach ◽  
Effective Hamiltonian ◽  
Two Dimensional ◽  
Extended Hubbard Model ◽  
Neighbor Interaction ◽  
Electron Hopping

In this paper, we generalized the perturbation approach to study the quasi-two-dimension extended Hubbard model. This model is characterizing by intra-chain electron hopping t, on-site Column interaction U, nearest-neighbor interaction V, and inter-chain electron hopping t′ and nearest-neighbor interaction V′. An effective Hamiltonian up to sixth-order in t/U, t/V, t/V′, t′/U, t′/V and t′/V′ expansion was obtained and the spin-spin correlation functions were calculated. We presented results for t=t′, V=V′.

scholarly journals One-dimensional Bose-Hubbard model with nearest-neighbor interaction

2000 ◽  
Vol 61 (18) ◽  
pp. 12474-12489 ◽  
Author(s):  
Till D. Kühner ◽  
Steven R. White ◽  
H. Monien
Keyword(s):  
Hubbard Model ◽  
Nearest Neighbor ◽  
Neighbor Interaction ◽  
One Dimensional

EXACT MEAN FIELD THEORY FOR CORRELATED LATTICE FERMIONS IN HIGH DIMENSIONS

1991 ◽  
Vol 05 (13) ◽  
pp. 861-869 ◽  
Author(s):  
P. G. J. VAN DONGEN
Keyword(s):  
Hubbard Model ◽  
Nearest Neighbor ◽  
Mean Field Theory ◽  
Mean Field ◽  
Lattice Models ◽  
Field Theories ◽  
Extended Hubbard Model ◽  
High Dimensions ◽  
Neighbor Interaction ◽  
Lattice Fermions

We review the recently introduced concept of exact mean-field theories for fermionic lattice models. The method is applied to the Extended Simplified Hubbard Model, which is an Extended Hubbard model (including nearest-neighbor interaction) where only the ↓-electrons can hop. The construction of an exact mean-field Hamiltonian is discussed and a summary is given of the results obtained for the critical temperature, the order parameter and the density of states.

One-electron Green function for the Hubbard model including next nearest neighbor hopping

1999 ◽  
Vol 259-261 ◽  
pp. 775-776 ◽  
Author(s):  
R Kirchhofer ◽  
R Frésard ◽  
H Beck ◽  
J.J Rodrı́guez-Núñez
Keyword(s):  
Green Function ◽  
Hubbard Model ◽  
Nearest Neighbor

Integrable Multi-impurity Open XXZ Chain with Next-Nearest-Neighbor Interaction

1999 ◽  
Vol 16 (6) ◽  
pp. 434-436
Author(s):  
Yun-zhong Lai ◽  
Ai-zhen Zhang ◽  
Zhan-ning Hu ◽  
Jiu-qing Liang ◽  
Fu-ke Pu (Pu Fu-cho)
Keyword(s):  
Nearest Neighbor ◽  
Neighbor Interaction ◽  
Xxz Chain
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