Abstract
A brief review of the types of ideas which have been used to investigate the phase diagram of the Hubbard model is presented. No clear solution emerges although the competitions at work are established. Hartree-Fock, Gutzwiller's projection, Nagaoka's theorem, Kanamori's paramagnetism, Lieb's exact results and charge-spin separation are the main concepts.
| Original language | English |
|---|---|
| Pages (from-to) | 865-883 |
| Number of pages | 19 |
| Journal | International Journal of Modern Physics B |
| Volume | 5 |
| Issue number | 6-7 |
| Publication status | Published - 1 Apr 1991 |