arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.0099cond-mat.quant-gas
收藏

一维周期势中超Tonks-Girardeau气体的带隙孤子

Gap solitons of a super-Tonks-Girardeau gas in a one-dimensional periodic potential

T. F. Xu, X. L. Jing, H. G. Luo, C. S. Liu

摘要:

研究了一维周期势场中超Tonks-Girardeau玻色气体带隙孤子的稳定性。线性稳定性分析表明,增大周期势的振幅或减小非线性相互作用,可以使不稳定的间隙孤子趋于稳定。特别是,理论分析和数值计算表明,与低族孤子相比,高族孤子更容易在线性Bloch带隙底部附近形成。数值结果还验证了各种间隙孤子与非线性Bloch波之间的合成关系具有普遍性,并且可以存在于超Tonks-Girardeau相位中。

英文摘要:

We study the stability of gap solitons of the super-Tonks-Girardeau bosonic gas in one-dimensional periodic potential. The linear stability analysis indicates that increasing the amplitude of periodic potential or decreasing the nonlinear interactions, the unstable gap solitons can become stable. In particular, the theoretical analysis and numerical calculations show that, comparing to the lower-family of gap solitons, the higher-family of gap solitons are easy to form near the bottoms of the linear Bloch band gaps. The numerical results also verify that the composition relations between various gap solitons and nonlinear Bloch waves are general and can exist in the super-Tonks-Girardeau phase.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑