论文标题
Spin-1 Bose气体中的Dark-Antidark Spinor孤子
Dark-Antidark Spinor Solitons in Spin-1 Bose Gases
论文作者
论文摘要
我们考虑使用一维捕获的旋转1叶气体，并在数值上探索其孤子解决方案的家族，即Antidark-Dark-Antidark（Addad），以及Dark-Antidark-Dark（Dadd）孤立波。它们的存在和稳定性在实验可访问的易于平面铁磁相中被系统地研究了原子数以及二次Zeeman Energy的延续。发现Addads比DADDS更具动态性。后者通常在检查的参数范围内不稳定。探索了这两个状态的动力演化，并研究了其潜在不稳定进化的含义。与拆分之前相比，与之相比，某些相关观察到的可能性涉及，例如，对称性的不稳定性表现，以及将DADD分裂为右手和一个左移动的Dark-Antidark对，与之前的抗黑暗群体相比，与之前的抗羽毛分开。在后一种情况下，这些结构被认为是在长期传播时散布的。
We consider a one-dimensional trapped spin-1 Bose gas and numerically explore families of its solitonic solutions, namely antidark-dark-antidark (ADDAD), as well as dark-antidark-dark (DADD) solitary waves. Their existence and stability properties are systematically investigated within the experimentally accessible easy-plane ferromagnetic phase by means of a continuation over the atom number as well as the quadratic Zeeman energy. It is found that ADDADs are substantially more dynamically robust than DADDs. The latter are typically unstable within the examined parameter range. The dynamical evolution of both of these states is explored and the implication of their potential unstable evolution is studied. Some of the relevant observed possibilities involve, e.g., symmetry-breaking instability manifestations for the ADDAD, as well as splitting of the DADD into a right- and a left-moving dark-antidark pair with the anti-darks residing in a different component as compared to prior to the splitting. In the latter case, the structures are seen to disperse upon long-time propagation.
