scholarly journals Influence of next-nearest-neighbor electron hopping on the static and dynamical properties of the two-dimensional Hubbard model

1995 ◽  
Vol 52 (21) ◽  
pp. 15607-15616 ◽  
Author(s):  
Daniel Duffy ◽  
Adriana Moreo
Keyword(s):  
Hubbard Model ◽  
Nearest Neighbor ◽  
Two Dimensional ◽  
Electron Hopping ◽  
Dynamical Properties

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′.

Monte Carlo calculation of dynamical properties of the two-dimensional Hubbard model

1989 ◽  
Vol 63 (14) ◽  
pp. 1523-1526 ◽  
Author(s):  
S. R. White ◽  
D. J. Scalapino ◽  
R. L. Sugar ◽  
N. E. Bickers
Keyword(s):  
Monte Carlo ◽  
Hubbard Model ◽  
Monte Carlo Calculation ◽  
Two Dimensional ◽  
Dynamical Properties
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