INTERACTING BOSONIC ATOMS WITH RANDOM POTENTIAL IN OPTICAL LATTICES

被引：0

作者：

Liu, Wei ^{[1
]}

Zhu, Jian-Yang ^{[1
]}

机构：

[1] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China

来源：

MODERN PHYSICS LETTERS B | 2009年 / 23卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Ultracold atoms; optical lattices; Bose-Hubbard model; quantum phase transitions; HUBBARD-MODEL; TRANSITION; PHASE; LOCALIZATION; SUPERFLUID; INSULATOR; HELIUM;

D O I：

10.1142/S0217984909019521

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, we study the ultracold atoms in optical lattice with a weak random external potential by an extended Bose-Hubbard model. When the on-site interaction is strong enough, the model can be mapped to the XXZ model. Then the mean-field theory is applied and we get the zero- and finite-temperature phase diagrams in different optical parameters. The differences between the systems with and without disorder were found, and the Bose-glass phase may exist in the system with disorder.

引用

页码：1391 / 1404

页数：14

共 33 条

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