Magnetic Susceptibility at Zero Temperature for the One-Dimensional Hubbard Model

1972 ◽  
Vol 6 (3) ◽  
pp. 930-938 ◽  
Author(s):  
H. Shiba
1995 ◽  
Vol 09 (12) ◽  
pp. 1503-1514 ◽  
Author(s):  
F.D. BUZATU

The ground-state instabilities for a one-dimensional lattice system of electrons with onsite (Hubbard) and bond-site (hopping) interactions are analyzed in a perturbative approach. The zero temperature phase diagram at different band fillings is drawn; an attractive (repulsive) bond-site interaction favors the appearance of a superconductor state at low concentrations of electrons (holes). A comparison with the exact results for the Hubbard model and previous works for particular cases is also discussed.


AIP Advances ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 125127
Author(s):  
Václav Janiš ◽  
Antonín Klíč ◽  
Jiawei Yan

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