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arXiv 1606.07348nlin.PScond-mat.quant-gasnlin.SI
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具有空间调制非线性的原子-分子玻色-爱因斯坦凝聚体中的局域空间非线性物质波

Localized spatially nonlinear matter waves in atomic-molecular Bose-Einstein condensates with space-modulated nonlinearity

Yu-Qin Yao, Ji Li, Wei Han, Deng-Shan Wang, Wu-Ming Liu

摘要:

内禀非线性是玻色-爱因斯坦凝聚体(BECs)最显著的特性。对于具有时间和空间调制非线性的原子玻色-爱因斯坦凝聚,人们已经做了大量的研究,而对于具有空间调制非线性的原子-分子玻色-爱因斯坦凝聚,研究工作还很少。在此,我们得到了具有囚禁势和空间调制非线性的原子-分子BEC的两类Jacobi椭圆解和一族有理解,并考虑了三体相互作用对局域物质波解的影响.分析了无耦合局域非线性物质波的拓扑性质:非线性物质波函数的宇称只依赖于主量子数$n$,每个量子态的密度包数同时依赖于主量子数$n$和次量子数$l$ .当耦合不为零时,由有理函数给出的局域非线性物质波,其拓扑性质与主量子数$n$无关,只与次量子数$l$有关。拉曼失谐量和化学势可以改变密度包的数目和形状。Jacobi椭圆解的稳定性依赖于主量子数$n$,而有理解的稳定性依赖于化学势和Raman失谐量.

英文摘要:

The intrinsic nonlinearity is the most remarkable characteristic of the Bose-Einstein condensates (BECs) systems. Many studies have been done on atomic BECs with time- and space- modulated nonlinearities, while there is few work considering the atomic-molecular BECs with space-modulated nonlinearities. Here, we obtain two kinds of Jacobi elliptic solutions and a family of rational solutions of the atomic-molecular BECs with trapping potential and space-modulated nonlinearity and consider the effect of three-body interaction on the localized matter wave solutions. The topological properties of the localized nonlinear matter wave for no coupling are analysed: the parity of nonlinear matter wave functions depends only on the principal quantum number $n$, and the numbers of the density packets for each quantum state depend on both the principal quantum number $n$ and the secondary quantum number $l$. When the coupling is not zero,the localized nonlinear matter waves given by the rational function, their topological properties are independent of the principal quantum number $n$, only depend on the secondary quantum number $l$. The Raman detuning and the chemical potential can change the number and the shape of the density packets. The stability of the Jacobi elliptic solutions depends on the principal quantum number $n$, while the stability of the rational solutions depends on the chemical potential and Raman detuning.

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。

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