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arXiv 2602.19015gr-qcmath-phmath.MP
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单类经典点电荷和裸点奇点时空的单位性和有限自能

Unitary and finite self-energy of a massive classical point charge as a naked point singularity

Arizona State University(亚利桑那州立大学)

Daxx W. Delucchi

AI总结:

研究单类经典点电荷和裸点奇点时空的线性扰动,揭示其单位性和有限自能特性,通过主方程和正二次型实现自共轭算子。

摘要:

我们分析了超极端雷斯内尔-诺德斯特罗姆几何的线性爱因斯坦-麦克斯韦扰动,其在静态克尔-施琴德静止框架中,视作单个静态点电荷的非线性自场。在光学径向坐标中,利用柯达马-伊希巴ashi的 gauge 不变形式,每个辐射多极被编码为半线上单个标量主场。所得到的主方程为雷杰-惠勒类型,具有在光学顶点处的反平方势核心(受哈代不等式控制)和无限远处的短程尾部。爱因斯坦-麦克斯韦 T 能量的空间加势部分可闭合且有下界,这定义了一个在自然能量空间上的正二次型。其弗里德里希扩展则给出了主算子的规范自共轭实现。静态库仑场及其非线性引力反作用被作为精确背景。所有具有有限空间 T 能量的线性爱因斯坦-麦克斯韦扰动在能量空间中演化为单位性。在有限光学距离处的裸奇点在技术意义上是“沉默”的,因为它不携带 T 能量通量。我们还构造了未来 null 无穷远处的前向辐射场,获得了一个自场动力学的翻译表示,在此表示中,守恒的 T 能量与迟后时间中的辐射轮廓的 L^2 范数一致。

英文摘要:

We analyze linear Einstein--Maxwell perturbations of the superextremal Reissner--Nordström geometry, the nonlinear self-field of a single static point charge, in its static Kerr--Schild rest frame. Using optical radial coordinates and gauge-invariant master variables, we reduce the radiative Einstein--Maxwell sectors to scalar wave equations on the half-line. The resulting master equations are of Regge--Wheeler type, with inverse-square potential cores at the optical apex and short-range tails at infinity. Hardy control at the apex, together with the short-range estimates at infinity, proves that the action-induced spatial $T$-energy forms are semibounded and closable. Closing these spatial forms determines their finite-energy configuration-form domains; adjoining the $L^2$ velocity components supplied by the kinetic energy gives the Cauchy-data energy spaces. The form representation theorem then yields the action-normalized Friedrichs Hamiltonians associated with the master operators. The static Coulomb field and its nonlinear gravitational backreaction are treated as the exact background. All radiative perturbations whose Cauchy data have finite total $T$-energy evolve uniquely and unitarily on the completed energy space. The naked singularity remains geometrically present but is dynamically silent: it carries no $T$-energy flux, supports no finite-energy bound state, and introduces no hidden finite-energy endpoint sector. We also construct the forward radiation field at future null infinity, obtaining a translation representation in which the conserved $T$-energy equals the squared $L^2$ norm of the radiation profile in retarded time.

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