Two-orbital Hubbard model vs spin S=1 Heisenberg model: studies on clusters
We perform exact numeric calculations for the two-orbital Hubbard model on the four-site cluster. In the limit of large on-site coupling the model becomes equivalent to the spin S=1 Heisenberg model. By comparing energy spectra of these two models, we quantified the range of interaction parameters f...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Institute for Condensed Matter Physics
2018-09-01
|
| Series: | Condensed Matter Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.5488/CMP.21.33301 |