Spin-1 Bose-Hubbard model with two- and three-body interactions
Abstract
We investigated the ground state of spin-1 bosons interacting under local two- and three-body interactions in one dimension by means of the density matrix renormalization group method. We found that the even-odd asymmetry will be obtained or not depending on the relative values of the two- and three-body interactions. The Mott insulator lobes are spin isotropic, the first showing a dimerized pattern and the second being composed of singlets. The three-body interactions disfavor a longitudinal polar superfluid and a quantum phase transition to a transverse polar superfluid occurs, which could be continuous or discontinuous.
- Publication:
-
Physics Letters A
- Pub Date:
- July 2018
- DOI:
- 10.1016/j.physleta.2018.04.029
- arXiv:
- arXiv:1707.08195
- Bibcode:
- 2018PhLA..382.1760H
- Keywords:
-
- Bose-Hubbard model;
- Degenerate gases;
- Quantum phase transitions;
- Condensed Matter - Quantum Gases;
- Quantum Physics
- E-Print:
- 8 pages, 7 figures. Published version