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arXiv math-ph/9907009math-phhep-thmath.FAmath.MPphysics.class-ph
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点粒子的δ相互作用和电动力学

Delta Interactions and Electrodynamics of Point Particles

Diego Noja, Andrea Posilicano

摘要:

本文报道了作者最近的一些工作,这些工作表明了在偶极近似下,Laplacian的奇异(点)微扰与描述带电点粒子与自生辐射场相互作用的动力学系统(Maxwell-Lorentz系统)之间的关系。我们证明了在点粒子的极限下,系统的动力学可用一个包含点相互作用类的自伴算子$H_m$的抽象波动方程描述;经典的Abraham-Lorentz-Dirac三阶方程,或者更好的是其积分的二阶版本,作为场的奇异部分的演化方程出现,并且与进入算子域定义中的边界条件有关。$H_m$。给出了极限模型的Hamilton结构,并在无外力的情况下,研究了线性稳定流形上的约化动力学。

英文摘要:

We report on some recent work of the authors showing the relations between singular (point) perturbation of the Laplacian and the dynamical system describing a charged point particle interacting with the self-generated radiation field (the Maxwell-Lorentz system) in the dipole approximation. We show that in the limit of a point particle, the dynamics of the system is described by an abstract wave equation containing a selfadjoint operator $H_m$ of the class of point interactions; the classical Abraham-Lorentz-Dirac third order equation, or better its integrated second order version, emerges as the evolution equation of the singular part of the field and is related to the boundary conditions entering in the definition of the operator domain of $H_m$. We also give the Hamiltonian structure of the limit model and, in the case of no external force, we study the reduced dynamics on the linear stable manifold.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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