论文标题
二维各向异性偶极冷凝物孤子的深度无弹性碰撞
Deep inelastic collision of two-dimensional anisotropic dipolar condensate solitons
论文作者
论文摘要
在偶极玻色 - 因斯坦冷凝物（BEC）中产生稳定的各向异性孤子的可能性导致在与接触相互作用的非极性BEC中不可能发生不同的情况。我们研究了由极化偶极原子组成的准二维BEC中各向异性明亮孤子的静态和动力学。我们研究两个这样的圆锥体的碰撞动力学在极化和碰撞方向之间的不同角度的不同速度。发现碰撞在大速度下是准弹性。在较小的速度下，碰撞是无弹性的，导致在激发剪刀模式，单极模式或四极模式下形成凝聚的孤子。同样，在较小的速度下，碰撞后，孤子运动的运动方向发生了很大的变化。研究通过基础平均场Gross-Pitaevskii方程的数值解进行。
The possibility of generating stable anisotropic solitons in dipolar Bose-Einstein condensates (BECs) leads to a different scenario not possible in a nondipolar BEC with contact interaction. We study the statics and dynamics of anisotropic bright solitons in quasi-two-dimensional BECs consisting of polarized dipolar atoms.We study the collision dynamics of two such solitons at different velocities for different angles between the polarization and collision directions. The collision is found to be quasi elastic at large velocities. At small velocities the collision is inelastic leading to the formation of a coalesced soliton in an excited scissors mode, monopole mode or quadrupole mode. Also, at small velocities, after collision, a large change of direction of motion of the solitons is possible. The investigation is performed through a numerical solution of the underlying mean-field Gross-Pitaevskii equation.
