Ground-state and rotational properties of a two-component Bose-Einstein condensate in a harmonic plus quartic trap

被引：6

作者：

Chen, Guang-Ping ^{[1
,2
]}

Zhang, Zhi-Yuan ^{[3
]}

Dong, Biao ^{[1
,2
]}

Wang, Lin-Xue ^{[4
]}

Zhang, Xiao-Fei ^{[1
]}

Zhang, Shou-Gang ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Time & Frequency Primary Stand, Natl Time Serv Ctr, Xian 710600, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Sichuan Univ Art & Sci, Sch Phys & Mech Tron Engn, Dazhou 635000, Peoples R China

[4] Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China

来源：

PHYSICS LETTERS A | 2015年 / 379卷 / 37期

关键词：

Bose-Einstein condensate; Ground-state; Vortex structure; Harmonic plus quartic trap; VORTEX FORMATION; VORTICES;

D O I：

10.1016/j.physleta.2015.06.062

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider a two-component Bose-Einstein condensate under extreme elongation in a harmonic plus quartic trap. The ground-state and rotational properties of such a system are numerically studied as a function of intra- and inter-component contact interactions, and of the rotational frequency. For the nonrotational case, we obtain the exact phase diagram showing the ground-state density distributions as contact-interactions varied. For both slowly and ultrarapidly rotational cases, we demonstrate that the vortex configurations depend strongly on the relative strength of the contact interactions, as well as on the rotational frequency. The controllable system may be used to investigate the interplay of interaction and rotation, and to explore more exotic quantum phases. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：2193 / 2197

页数：5

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