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) |
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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