Low-lying excitations of vortex lattices in condensates with anisotropic dipole-dipole interaction

被引：8
作者：
Jia, Lijuan [1 ,2 ]
Wang, An-Bang [1 ,2 ]
Yi, Su [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[3] Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China
来源：
PHYSICAL REVIEW A | 2018年 / 97卷 / 04期
关键词：
BOSE-EINSTEIN CONDENSATE; STABILITY;
D O I：
10.1103/PhysRevA.97.043614
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigated the low-lying collective excitations of quasi-two-dimensional dipolar Bose-Einstein condensates confined in a rotating harmonic potential using the Bogoliubov-de Gennes equation. By varying the trap rotation frequency and dipolar interaction strength, we show how the anisotropic dipole-dipole interaction modifies the collective excitations of the condensates. In particular, under strong dipolar interaction, the vortex-displacement excitations differ significantly from the nondipolar case.
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页数：7
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