Abstract
Lieb and Liniger's soluble model of the 1-D Bose gas is put on a lattice, becoming a "boson-Hubbard model". It remains soluble by the Bethe ansatz. When the coupling exceeds a critical value ( U 2πT)> 2√3 π, a gap is present when the density n bosons per site is 1.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 281-283 |
| Number of pages | 3 |
| Journal | Physics Letters A |
| Volume | 80 |
| Issue number | 4 |
| DOIs | |
| State | Published - Dec 8 1980 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy