Perturbation Theory and Singularities in Two-Dimensional Hubbard Model at Low Electron Density

1991 ◽  
Vol 60 (2) ◽  
pp. 372-375 ◽  
Author(s):  
Hidetoshi Fukuyama ◽  
Osamu Narikiyo ◽  
Yasumasa Hasegawa
Keyword(s):  
Perturbation Theory ◽  
Hubbard Model ◽  
Electron Density ◽  
Two Dimensional

Two-dimensional Hubbard model in low electron density limit

1991 ◽  
Vol 185-189 ◽  
pp. 1537-1538 ◽  
Author(s):  
Osamu Narikiyo ◽  
Yasumasa Hasegawa ◽  
Hidetoshi Fukuyama
Keyword(s):  
Hubbard Model ◽  
Electron Density ◽  
Two Dimensional ◽  
Density Limit

scholarly journals Thermodynamics of the Planar Hubbard Model

2003 ◽  
Vol 17 (18n20) ◽  
pp. 3377-3380 ◽  
Author(s):  
J. Bonča ◽  
P. Prelovšek
Keyword(s):  
Thermodynamic Properties ◽  
Hubbard Model ◽  
Specific Heat ◽  
Electron Density ◽  
Finite Temperature ◽  
Lanczos Method ◽  
Two Dimensional ◽  
Phase Averaging ◽  
Half Filling ◽  
Additional Phase

The thermodynamic properties: specific heat and entropy are studied as a function of temperature and doping within the two-dimensional Hubbard model with various U/t=4-12. Quantities are calculated using the finite-temperature Lanczos method with additional phase-averaging for a system of 4×4 sites. Results show that the entropy at low T reaches a maximum near half-filling at the electron density n~1±0.15 in the whole regime of studied U/t.

The pairing symmetries in the two-dimensional Hubbard model

2021 ◽  
pp. 127153
Author(s):  
Ke Liu ◽  
Shuhui Yang ◽  
Weiqi Li ◽  
Tao Ying ◽  
Jianqun Yang ◽  
...  
Keyword(s):  
Hubbard Model ◽  
Two Dimensional ◽  
Pairing Symmetries

scholarly journals Spin diffusion and spin conductivity in the two-dimensional Hubbard model

2021 ◽  
Vol 103 (15) ◽  
Author(s):  
Martin Ulaga ◽  
Jernej Mravlje ◽  
Jure Kokalj
Keyword(s):  
Hubbard Model ◽  
Spin Diffusion ◽  
Two Dimensional
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