Many-body dynamics of a Bose system with attractive interactions on a ring
其他凝聚态物理
2009-11-11 v1
摘要
We investigate the many-body dynamics of an effectively attractive one-dimensional Bose system confined in a toroidal trap. The mean-field theory predicts that a bright-soliton state will be formed when increasing the interparticle interaction over a critical point. The study of quantum many-body dynamics in this paper reveals that there is a modulation instability in a finite Bose system correspondingly. We show that Shannon entropy becomes irregular near and above the critical point due to quantum correlations. We also study the dynamical behavior of the instability by exploring the momentum distribution and the fringe visibility, which can be verified experimentally by releasing the trap
引用
@article{arxiv.cond-mat/0509441,
title = {Many-body dynamics of a Bose system with attractive interactions on a ring},
author = {Weibin Li and Xiaotao Xie and Zhiming Zhan and Xiaoxue Yang},
journal= {arXiv preprint arXiv:cond-mat/0509441},
year = {2009}
}
备注
6 pages,5 figures