scholarly journals Pseudogap at hot spots in the two-dimensional Hubbard model at weak coupling

2005 ◽  
Vol 71 (11) ◽  
Author(s):  
Daniel Rohe ◽  
Walter Metzner
Keyword(s):  
Hubbard Model ◽  
Hot Spots ◽  
Weak Coupling ◽  
Two Dimensional

scholarly journals Nematic phase in a two-dimensional Hubbard model at weak coupling and finite temperature

2018 ◽  
Vol 98 (7) ◽  
Author(s):  
Sergey Slizovskiy ◽  
Pablo Rodriguez-Lopez ◽  
Joseph J. Betouras
Keyword(s):  
Hubbard Model ◽  
Finite Temperature ◽  
Weak Coupling ◽  
Nematic Phase ◽  
Two Dimensional

A WEAK COUPLING THEORY FOR La2CuO4: ln2–PARQUET APPROACH

1988 ◽  
Vol 02 (05) ◽  
pp. 667-677 ◽  
Author(s):  
I. E. Dzyaloshinskii ◽  
V. M. Yakovenko
Keyword(s):  
Fermi Surface ◽  
Hubbard Model ◽  
Weak Coupling ◽  
Weak Coupling Limit ◽  
Two Dimensional ◽  
Coupling Theory ◽  
Strong Difference ◽  
Effective Charges ◽  
Weak Coupling Theory

In the model of two-dimensional electrons with a square Fermi surface , ln 2-parquet equations are derived and numerically solved. It is suggested that this model can describe La 2 CuO 4 in the weak coupling limit. The main result is a strong difference between the Hubbard model with one charge and the model with four effective charges, describing an interaction of a general form.

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