Bose-Fermi-Hubbard model in the truncated Hilbert space limit
It is shown that in the Bose-Fermi-Hubbard model which is used for a description of the ultracold atomic boson-fermion mixture in the optical lattice, the n_B ≤ 2 restriction enables one to analyze a more general case of separated lobes Mott insulator in comparison with the case of n_B ≤ 1 (hard-cor...
| Published in: | Condensed Matter Physics |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Yukhnovskii Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine
2019-09-01
|
| Subjects: | |
| Online Access: | https://doi.org/10.5488/CMP.22.33704 |
| Summary: | It is shown that in the Bose-Fermi-Hubbard model which is used for a description of the ultracold atomic boson-fermion mixture in the optical lattice, the n_B ≤ 2 restriction enables one to analyze a more general case of separated lobes Mott insulator in comparison with the case of n_B ≤ 1 (hard-core bosons). It also showed that the restriction to no more than 2 bosons on site is enough to comprehend the structure of (μ, |t_0|) diagrams at arbitrary n^b values with an account of a possibility of the 1st order phase transition. |
|---|---|
| ISSN: | 1607-324X 2224-9079 |