arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.07388gr-qchep-th
收藏

Melvin-Kerr-Newman时空

Insights from Melvin-Kerr-Newman spacetimes

Ivan Booth, Matthew Hunt, Alberto Palomo-Lozano, Hari K. Kunduri

摘要:

我们研究了几个方面的黑洞视界物理使用梅尔文-克尔-纽曼(MKN)家庭的时空。粗略地说,这些黑洞是沉浸在扭曲的背景磁场中,与标准的Kerr-Newman(KN)家族不同,它们不是渐近平坦的。作为视界相对于KN可能高度扭曲的精确解,它们为限制黑洞视界的想法和定理提供了一个很好的测试平台。我们明确地表明,MKN的视界与固定的磁场参数可能是唯一指定的面积,电荷和角动量和电荷和角动量的束缚视界面积以同样的方式为KN。正如预期的那样,极值MKN视界与极值KN视界是几何同构的,并且近极值视界的几何失真受到它们接近极值的约束。在另一个极端,梅尔文-史瓦西(MS)解可能是无限扭曲的,然而对于中间情况,任何非零电荷或角动量限制扭曲是有限的。这些性质与已知的定理是一致的,但被认为是满足有趣的和非平凡的方式。

英文摘要:

We examine several aspects of black hole horizon physics using the Melvin-Kerr-Newman (MKN) family of spacetimes. Roughly speaking these are black holes immersed in a distorting background magnetic field and unlike the standard Kerr-Newman (KN) family they are not asymptotically flat. As exact solutions with horizons that can be highly distorted relative to KN, they provide a good testbed for ideas about and theorems constraining black hole horizons. We explicitly show that MKN horizons with fixed magnetic field parameter may be uniquely specified by their area, charge and angular momentum and that the charge and angular momentum are bound by horizon area in the same way as for KN. As expected, extremal MKN horizons are geometrically isomorphic to extremal KN horizons and the geometric distortion of near-extremal horizons is constrained by their proximity to extremality. At the other extreme, Melvin-Schwarzschild (MS) solutions may be infinitely distorted, however for intermediate cases any non-zero charge or angular momentum restricts distortions to be finite. These properties are in agreement with known theorems but are seen to be satisfied in interesting and non-trivial ways.

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。

↑