Dark–bright soliton dynamics beyond the mean-field approximation
Dark–bright soliton dynamics beyond the mean-field approximation
复制标题
超越平均场近似的暗-亮孤子动力学
DOI：
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
P. Schmelcher
中科院分区：
文献类型：
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作者：
G. Katsimiga;G. Koutentakis;S. Mistakidis;P. Kevrekidis;P. Schmelcher
研究了超过平均场近似的暗-亮孤子的动力学。我们首先考察了单DB孤子及其在抛物线阱中的振荡情况。随后，我们转到碰撞设置，将平均场近似与暗部和亮部包含多个轨道的近似进行比较。碎片是存在的，并显著影响动力学，特别是在慢孤子和低原子序数孤子的情况下。这表明，碎片的存在允许在可区分的物种之间的双部纠缠。最重要的是，碎片和纠缠之间的相互作用导致每一个偏离抛物线阱中心的平均场DB孤子分裂成一个快孤子波和一个慢孤子波。后一过程与平均场近似的预测正好相反。在多个（同时填充的）轨道中观察到多种激发态，包括DB孤子。暗-反暗态和域-壁-亮孤子复合体也可以在超平均场动力学中自发产生。
The dynamics of dark–bright (DB) solitons beyond the mean-field approximation is investigated. We first examine the case of a single DB soliton and its oscillations within a parabolic trap. Subsequently, we move to the setting of collisions, comparing the mean-field approximation to that involving multiple orbitals in both the dark and the bright component. Fragmentation is present and significantly affects the dynamics, especially in the case of slower solitons and in that of lower atom numbers. It is shown that the presence of fragmentation allows for bipartite entanglement between the distinguishable species. Most importantly the interplay between fragmentation and entanglement leads to the splitting of each of the parent mean-field DB solitons, placed off-center within the parabolic trap, into a fast and a slow daughter solitary wave. The latter process is in direct contrast to the predictions of the mean-field approximation. A variety of excitations including DB solitons in multiple (concurrently populated) orbitals is observed. Dark–antidark states and domain-wall-bright soliton complexes can also be observed to arise spontaneously in the beyond mean-field dynamics.
方差作为相关性的敏感样本
影响因子：
2.9
作者：
Shachar Klaiman;Ofir E. Alon
通讯作者：
Ofir E. Alon
多组分玻色-爱因斯坦凝聚中的矢量暗-反暗孤立波
影响因子：
2.9
作者：
Danaila, I.;Khamehchi, M. A.;Gokhroo, V.;Engels, P.;Kevrekidis, P. G.
通讯作者：
Kevrekidis, P. G.
通过碰撞纠缠两个可区分的量子亮孤子
DOI：
10.1088/1742-6596/497/1/012033
发表时间：
2014
期刊：
Conference Series
影响因子：
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作者：
Billam T
通讯作者：
Billam T