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Gravitational memory effects of black bounces and a traversable wormhole
The European Physical Journal C ( IF 4.4 ) Pub Date : 2024-04-01 , DOI: 10.1140/epjc/s10052-024-12718-5
Hamed Hadi , Reza Naderi

Black bounces are spacetimes that can be interpreted as either black holes or wormholes depending on specific parameters. In this study, we examine the Simpson–Visser and Bardeen-type solutions as black bounces and investigate the gravitational wave in the background of these solutions. We then explore the displacement and velocity memory effects by analyzing the deviation of two neighboring geodesics and their derivatives influenced by the magnetic charge parameter a. This investigation aims to trace the magnetic charge in the gravitational memory effect. Additionally, we consider another family of traversable wormhole solutions obtained from non-exotic matter sources to trace the electric charge \(Q_{e}\) in the gravitational memory effect, which can be determined from the far field asymptotic. Furthermore, this research aims to explore the gravitational memory effect related to the variation in Bondi mass for the Simpson–Visser and Bardeen-type black bounces. The investigation will also be conducted on a traversable wormhole solution that does not require any exotic field. This study holds importance in not only identifying compact objects such as wormholes through gravitational memory effects but also in observing the charge \(Q_{e}\), which offers a tangible manifestation of Wheeler’s idea of “electric charge without charge.”



中文翻译:

黑色弹跳和可穿越虫洞的引力记忆效应

黑色反弹是时空,根据特定参数可以解释为黑洞或虫洞。在这项研究中,我们将辛普森-维瑟和巴丁型解决方案作为黑色反弹进行研究,并研究这些解决方案背景中的引力波。然后,我们通过分析两个相邻测地线的偏差及其受磁荷参数a影响的导数来探索位移和速度记忆效应。这项研究旨在追踪引力记忆效应中的磁荷。此外,我们考虑从非奇异物质源获得的另一类可穿越虫洞解,以追踪引力记忆效应中的电荷\(Q_{e}\),这可以从远场渐近确定。此外,本研究旨在探索辛普森-维瑟和巴丁型黑弹跳中与邦迪质量变化相关的引力记忆效应。该研究还将在不需要任何外来场的可穿越虫洞解决方案上进行。这项研究不仅对于通过引力记忆效应识别虫洞等致密物体具有重要意义,而且对于观察电荷\(Q_{e}\)也具有重要意义,这为惠勒的“不带电荷的电荷”思想提供了切实的体现。

更新日期:2024-04-02
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