arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0808.3479gr-qc
收藏

电荷对时空的标架拖曳有贡献吗?

Does Charge Contribute to the Frame Dragging of Spacetime?

Babur M. Mirza

摘要:

被强引力束缚的带电系统可以承受巨大的电荷(高达10 ^20 C),以对抗库仑排斥。广义相对论,这样的系统形成一个稳定的流体静力学配置在非旋转和旋转的情况下。在这里,我们研究的电荷(电能量密度)的时空外的旋转带电系统的强引力约束的影响。特别是,我们研究了电荷密度对外部区域时空框架拖曳的影响。利用耦合的Einstein-麦克斯韦方程组,我们发现在慢旋转近似下,电荷积累不仅起着附加质量的作用,从而改变了时空的球对称部分,而且电荷也直接对时空的拖曳起作用。得到了一个修正的Lense-Thirring时空坐标系拖曳频率公式。

英文摘要:

Electrically charged systems bound by a strong gravitational force can sustain a huge amount of electric charge (up to 10^20C) against Coulomb repulsion. General relativistically such systems form a stable hydrostatic configuration both in the non-rotating and rotating cases. Here we study the effects of electric charge (electric energy density) on the spacetime outside a rotating electrically charged system bound by a strong gravitational force. In particular we investigate the effect of charge density on frame-dragging of spacetime in the exterior region. Using the coupled Einstein-Maxwell equations it is found that in the slow rotation approximation charge accumulations not only acts like an additional mass, thus modifying the spherically symmetric part of the spacetime, the electric charge also contributes directly to the dragging of spacetime. A modified Lense-Thirring formula for the spacetime frame dragging frequency is obtained.

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。

↑