完美流体暗物质对克尔-纽曼黑洞弱引力和弱宇宙审查猜想一致性的影响

IF 2.5 3区 物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS
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引用次数: 0

摘要

广义相对论的主要难题之一是弱引力猜想(WGC)与弱宇宙审查猜想(WCCC)之间的潜在冲突。宇宙审查是保证引力理论一致性的基本假设。然而,本文通过研究在渐近平坦时空中被完美流体暗物质(PFDM)包围的克尔-纽曼黑洞,研究了协调 WGC 和 WCCC 的可行性。这两个猜想看似互不相关,但最近的一个想法提出,它们之间有着惊人的联系。具体地说,我们在四维框架中提出了一套合理的WCCC,考虑了当WGC活跃时的克尔-纽曼黑洞。我们证明,通过对度量参数施加某些限制,WGC 和 WCCC 可以保持一致。此外,我们还探讨了存在PFDM时Q>M的克尔-纽曼黑洞的特征,并展示了一些精彩的数据,以同时验证WGC和WCCC的准确性。当PFDM不存在时(λ=0),如果Q2/M2≤1,克尔-纽曼黑洞有两个事件视界;如果Q2/M2>1,则没有事件视界。但当存在 PFDM 时(λ≠0),克尔-纽曼黑洞的事件视界取决于 Q、a 和 M。此外,我们还证明了存在一个临界值λ,用λext表示,当λ=λext时,该临界值成为极值克尔-纽曼黑洞。在这种情况下,黑洞具有事件视界,WGC 和 WCCC 仍然满足。我们的结论是,PFDM 可以使克尔-纽曼黑洞的 WGC 和 WCCC 兼容,并且当 PFDM 存在时,WGC 和 WCCC 相互一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influences of perfect fluid dark matter on coinciding validity of the weak gravity and weak cosmic censorship conjectures for Kerr-Newman black hole

One of the main difficulties in general relativity is the potential conflict between the weak gravity conjecture (WGC) and weak cosmic censorship conjecture (WCCC). Cosmic censorship is a basic assumption that guarantees the coherence of the gravity theory. However, this paper examines the feasibility of harmonizing the WGC and the WCCC by studying the Kerr Newman black hole surrounded by perfect fluid dark matter (PFDM) in asymptotically flat spacetimes. These two conjectures appear to be unrelated, but a recent idea proposed that they have a surprising connection. Specifically, we present a plausible set of for the WCCC in the four-dimensional framework, considering a Kerr-Newman black hole when WGC is active. We show that by applying certain restrictions on the parameters of the metric, the WGC and the WCCC can be consistent. Moreover, we explore the characteristics of the Kerr Newman black hole in the presence of PFDM for Q>M and display some fascinating figures to verify the accuracy of the WGC and the WCCC at the same time. When PFDM is absent (λ=0), the Kerr Newman black hole has either two event horizons if Q2/M21, or none if Q2/M2>1. The latter case leads to a naked singularity, which violates the WCCC. But when PFDM is present (λ0), the Kerr Newman black hole has event horizons depending on Q, a, and M. This means that the singularity is always hidden, and the WGC and the WCCC are satisfied. Furthermore, we prove that there is a critical value of λ, denoted by λext, that becomes the extremality Kerr Newman black hole when λ=λext. In this case, the black hole has an event horizon, and the WGC and the WCCC are still satisfied. We conclude that PFDM can make the WGC and the WCCC compatible for the Kerr Newman black hole and that the WGC and the WCCC concur with each other when PFDM is present.

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来源期刊
Nuclear Physics B
Nuclear Physics B 物理-物理:粒子与场物理
CiteScore
5.50
自引率
7.10%
发文量
302
审稿时长
1 months
期刊介绍: Nuclear Physics B focuses on the domain of high energy physics, quantum field theory, statistical systems, and mathematical physics, and includes four main sections: high energy physics - phenomenology, high energy physics - theory, high energy physics - experiment, and quantum field theory, statistical systems, and mathematical physics. The emphasis is on original research papers (Frontiers Articles or Full Length Articles), but Review Articles are also welcome.
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