Many-body ground-state properties of an attractive Bose-Einstein condensate in a one-dimensional ring

被引：7
|
作者：
Montina, A [1 ]
Arecchi, FT [1 ]
机构：
[1] Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, FI, Italy
来源：
PHYSICAL REVIEW A | 2005年 / 71卷 / 06期
关键词：
D O I：
10.1103/PhysRevA.71.063615
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study a Bose-Einstein condensate with attractive interactions in a one-dimensional ring and show that the ground state is well described by the superposition of bright solitons. A position measurement of some atoms gives rise to the state reduction of the soliton position, which increases the condensate fraction. The bunched many-body ground state is well approximated by a simple variational wave function.
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页数：5
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