Mott-Hubbard transition of bosons in optical lattices with two-body interactions

• 来源期刊: 中国物理C：英文版
• 学科: 物理学
• 关键词: 相互作用 玻色子 光晶格 Hubbard模型 流体状态 无量纲 Bose 实验参数
• 年，卷（期）: 2011,（6）
• 页码范围: 530-534
• 页数: 5页
• 分类号: O572.2|O431.2
• 语种: 中文

摘要

In this paper, based on the Bose-Hubbard model with two-body on-site interactions, we study the quantum phase transition between the superfluid state and the Mott-insulator state. With the decoupling approximation, we get the relation between the weak sup