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arXiv 1104.1383gr-qc
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带电畴壁外共形平坦时空的Einstein-麦克斯韦方程组解

A solution of the Einstein-Maxwell equations describing conformally flat spacetime outside a charged domain wall

Oyvind Gron, Steinar Johannesen

摘要:

我们推导并讨论了爱因斯坦-麦克斯韦方程组的共形平坦静态解的物理解释。有人认为,它描述了一个共形平坦的,静态的时空外的带电球对称畴壁。尽管壁外的电场具有正的引力质量,但重力的重力加速度被引导远离壁,如由托尔曼-惠特克表达式给出的。排斥引力的原因是墙的应变,这是使用以色列奇异表面的形式主义计算的。

英文摘要:

We derive and discuss the physical interpretation of a conformally flat, static solution of the Einstein-Maxwell equations. It is argued that it describes a conformally flat, static spacetime outside a charged spherically symmetric domain wall. The acceleration of gravity is directed away from the wall in spite of the positive gravitational mass of the electric field outside the wall, as given by the Tolman-Whittaker expression. The reason for the repulsive gravitation is the strain of the wall which is calculated using the Israel formalism for singular surfaces.

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