论文标题
与有限空间宽度的波袋相互作用的粒子动量变化
Particle momentum variation under interaction with wavepackets of finite spatial width
论文作者
论文摘要
分析和数值研究了与空间本地化的波袋的单一和集体粒子相互作用。研究了波袋的有限空间宽度在穿过波袋的动量和能量变化上的作用。研究并明确定义了基于扰动方法的分析结果有效性范围。强烈的非线性效应显示出具有较大相互作用强度的集体粒子动力学的定性区分。这些效果通过平均动量变化对初始粒子动量的复杂依赖性表现出来，如将粒子分布在分配粒子集合相对于其初始动量方面的剖面。结果提供了对单个和集体粒子动力学之间的关系以及与局部波袋弱粒子相互作用的复杂性的新出现的理解。
The single and collective particle interaction with spatially localized wavepackets is analytically and numerically studied. The role of the finite spatial width of the wavepacket on the momentum and energy variation of particles passing through the wavepacket is investigated. The range of validity of analytical results, based on a perturbative approach, is investigated and clearly defined. Strongly nonlinear effects are shown to qualitatively differentiate the collective particle dynamics, for larger interaction strengths. These effects are manifested through the complex dependency of averaged momentum variations on the initial particle momentum, as shown by dissecting a particle distribution in terms of partitioning the ensemble of particles with respect to their initial momentum. The results provide understanding on the relation between single and collective particle dynamics and the emerging of complexity for weak and strong particle interactions with localized wavepackets.
