Modulational Instability of Dipolar Bose-Einstein Condensates in Optical Lattices with Three-Body Interactions

被引：0

作者：

漆伟 ^{[1
]}

李子豪 ^{[1
]}

梁兆新 ^{[2
]}

机构：

[1] Department of Applied Physics, School of Arts and Sciences, Shaanxi University of Science and Technology

[2] Department of Physics, Zhejiang Normal University

来源：

Chinese Physics Letters | 2018年 / 35卷 / 01期

基金：

中国国家自然科学基金;

关键词：

TBI; Modulational Instability of Dipolar Bose-Einstein Condensates in Optical Lattices with Three-Body Interactions; BEC;

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Motivated by the recent experiment [Nature 530(2016) 194] in which a stable droplet in a dipolar quantum gas has been created by the interaction-induced instability, we focus on the modulation instability of an optically-trapped dipolar Bose-Einstein condensate with three-body interaction. Within the mean-field level, we analytically solve the discrete cubic-quintic Gross-Pitaevskii equation with dipole-dipole interaction loaded into a deep optical lattice and show how combined effects of the three-body interaction and dipole-dipole interaction on the condition of modulational instability. Our results show that the interplay of the three-body interaction and dipole-dipole interaction can dramatically change the modulation instability condition compared with the ordinary Gross-Pitaevskii equation. We believe that the predicted results in this work can be useful for the future possible experiment of loading a Bose-Einstein condensate of164Dy atoms with strong magnetic dipole-dipole interaction into an optical lattice.

引用

页码：11 / 14

页数：4