Energetics and structural properties of two- and three-boson systems in the presence of one-dimensional spin-orbit coupling
Energetics and structural properties of two- and three-boson systems in the presence of one-dimensional spin-orbit coupling
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DOI：
10.1103/physreva.100.042708
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发表时间：
2019-08
影响因子：
2.9
通讯作者：
Q. Guan;D. Blume
中科院分区：
文献类型：
--
作者：
Q. Guan;D. Blume
最近的研究表明，在具有两体短程相互作用的三全同玻色子系统中，当在哈密顿量中加入单粒子一维自旋-轨道耦合项时，作为Efimov效应基础的离散标度对称性仍然存在.在一维自旋轨道耦合（Rashba-Dresselhaus耦合的等量混合）的存在下，普通Efimov方案中的每个三体能级变成一个包含四个能级的能量流形。这项工作提供了一个详细的表征，在这些流形的能级。详细分析了进入三玻色子散射阈值的两玻色子能量。此外，结构特性，例如，动量分布的两个和三玻色子系统，分析了各种参数组合。
It was shown recently that the discrete scaling symmetry, which underlies the Efimov effect in the three identical boson system with two-body short-range interactions, survives when single-particle 1D spin-orbit coupling terms are added to the Hamiltonian. Each three-body energy level in the ordinary Efimov scenario turns into an energy manifold that contains four energy levels in the presence of 1D spin-orbit coupling (equal mixture of Rashba-Dresselhaus coupling). This work provides a detailed characterization of the energy levels in these manifolds. The two-boson energies, which enter into the three-boson scattering threshold, are analyzed in detail. Moreover, the structural properties, e.g., momentum distributions of the two- and three-boson systems, are analyzed for various parameter combinations.