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arXiv 1707.01416gr-qc
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Einstein-Maxwell-Einstein理论中带电虫孔引起的光偏转

Light deflection by charged wormholes in Einstein-Maxwell-dilaton theory

Kimet Jusufi, Ali Övgün, Ayan Banerjee

摘要:

本文在Einstein-Maxwell-Einstein理论的框架下研究了一类带电虫洞对光的偏转。原始虫洞被预测存在于早期宇宙中,那里的膨胀由介子场驱动。我们进行我们的分析,通过光学几何使用Gibbons-Werner方法(GW),通过采用高斯-邦纳定理和标准测地线的方法。我们报告了一个有趣的结果的偏转角的领先阶项-即,偏转角增加,由于电荷$Q$和磁荷$P$,而它减少,由于负电荷$Σ$。最后,我们通过测地线方程证实了我们的发现。我们的计算表明,GW方法在首阶项下给出了一个精确的结果。

英文摘要:

In this paper, we study the deflection of light by a class of charged wormholes within the context of the Einstein-Maxwell-dilaton theory. The primordial wormholes are predicted to exist in the early universe, where inflation driven by the dilaton field. We perform our analysis through optical geometry using the Gibbons-Werner method (GW), by adopting the Gauss-Bonnet theorem and the standard geodesics approach. We report an interesting result for the deflection angle in leading-order terms--namely, the deflection angle increases due to the electric charge $Q$ and the magnetic charge $P$, whereas it decreases due to the dilaton charge $Σ$. Finally, we confirm our findings by means of geodesics equations. Our computations show that the GW method gives an exact result in leading order terms.

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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