Capture and chaotic scattering of a charged particle by a magnetic monopole under a uniform electric field

Capture and chaotic scattering of a charged particle by a magnetic monopole under a uniform electric field
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均匀电场下磁单极子对带电粒子的捕获和混沌散射

DOI:
10.1103/physreve.98.052225
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发表时间:
2018
期刊:
影响因子:
2.4
通讯作者:
Nagaosa Naoto
Nagaosa Naoto
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Misaki Kou;Nagaosa Naoto

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受能量交叉点实现Berry曲率磁单极子的启发,我们从理论上研究了均匀电场作用下半经典波包动力学中磁单极子的效应,这与许多物理情况有关,如通过恶化点的驰豫。我们发现,单极磁场的后向散射和电场的加速之间的竞争导致束缚态,即捕获单极附近的粒子。此外,磁单极子引起的非线性导致了暂态动力学中的混沌行为,即暂态混沌。我们计算了产生暂态混沌的奇异鞍点的特征量,并验证了当我们将系统参数调整到系统可解的参数区域时,发生了突然的分叉。
Motivated by the realization of a magnetic monopole of Berry curvature by the energy crossing point, we study theoretically the effect of a magnetic monopole under a uniform electric field in semiclassical wave-packet dynamics, which is relevant to many physical situations such as relaxation through the diabolic point. We found that the competition between backward scattering by a monopole magnetic field and acceleration by an electric field leads to a bound state, i.e., capture of a particle near the monopole. Furthermore, the nonlinearity induced by the magnetic monopole leads to chaotic behavior in transient dynamics, i.e., transient chaos. We computed the characteristic quantities of the strange saddle, which gives rise to transient chaos, and we verified that the abrupt bifurcation occurs as we tune the system parameter toward the parameter region in which the system is solvable.
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DOI: --
发表时间: 1976
期刊:
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作者:
J. Schwinger;K. Milton;W. Tsai;L. DeRaad;Donald C. Clark
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