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arXiv 2407.09591gr-qchep-th
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具有非线性电磁场的Ellis虫洞

Ellis wormhole with nonlinear electromagnetic field

Xin Su, Chen-Hao Hao, Yong-Qiang Wang

AI总结:

本研究提出爱因斯坦引力耦合幻影场与非线性电磁场的球对称Ellis虫洞解,验证其违反零能量条件、ADM质量随参数由正变负,分析了不同质量下的光环特性并绘制嵌入图展示几何特征。

摘要:

本文提出了爱因斯坦引力耦合幻影场与非线性电磁场下的球对称虫洞。数值结果表明,该解违反零能量条件(NEC),且随着参数变化,整个时空的ADM质量会由正变负。此外,我们分析了该解的光环(LR)并论证了其天文观测特性:尤其当出现负质量时,常规光环不会出现,仅在虫洞喉部存在一个“特殊不稳定光环”,这是由虫洞两侧负质量的排斥效应导致的。最后,我们绘制了嵌入图以反映虫洞的几何特征。

英文摘要:

In this paper, we present the spherically symmetric wormhole in Einstein's gravity coupling phantom field and nonlinear electromagnetic field. Numerical results show that this solution violates the Null Energy Condition (NEC), and as the parameters change, the ADM mass of the entire spacetime changes from positive to negative. In addition, we analyze the light ring (LR) of the solution and demonstrate the astronomical observation properties. Especially when negative mass appears, the general LR will not appear, only a ``special unstable LR" exists at the throat, which is caused by the repulsive effect of the negative mass on both sides of the wormhole. Finally, we draw the embedding diagram to reflect the geometric characteristics of the wormhole.

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