Spin-1 Bose-Hubbard model with two- and three-body interactions

被引：2
|
作者：
Hincapie-F, A. F. [1 ]
Franco, R. [1 ]
Silva-Valencia, J. [1 ]
机构：
[1] Univ Nacl Colombia, Dept Fis, Bogota 5997, Colombia
来源：
PHYSICS LETTERS A | 2018年 / 382卷 / 26期
关键词：
Bose-Hubbard model; Degenerate gases; Quantum phase transitions; MAGNETISM;
D O I：
10.1016/j.physleta.2018.04.029
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：1760 / 1765
页数：6
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