Quantum improved charged black holes
Quantum improved charged black holes
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量子改进的带电黑洞
DOI：
10.1103/physrevd.104.066016
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发表时间：
2021
影响因子：
5
通讯作者：
Daiki Yamaguchi
中科院分区：
文献类型：
--
作者：
Akihiro Ishibashi;Nobuyoshi Ohta;Daiki Yamaguchi
考虑了球对称黑洞时空中引力和电磁场在渐近安全情况下的量子效应。从重整化群方程中引入运行的引力耦合和电磁耦合，并应用基于Kretschmann标量的物理上可感知的尺度识别方案，我们构建了一个量子力学修正或“量子改进”的Reissner-Nordstrom度量。我们研究了量子改进几何的全局结构，并特别表明，中心奇点被解决了，通常被一个规则的闵可夫斯基核所取代，其中曲率张量消失。通过探索具有更一般尺度标识的情况，我们进一步发现量子改进几何的空间分为两个区域：一个区域用于具有规则Minkowski核的几何，另一个区域用于具有中心弱奇点的几何。在两个区域的边界处，几何图形具有闵可夫斯基核、德西特核或反德西特核。
We consider quantum effects of gravitational and electromagnetic fields in spherically symmetric black hole spacetimes in the asymptotic safety scenario. Introducing both the running gravitational and electromagnetic couplings from the renormalization group equations and applying a physically sensible scale identification scheme based on the Kretschmann scalar, we construct a quantum-mechanically corrected, or “quantum improved” Reissner-Nordstrom metric. We study the global structure of the quantum improved geometry and show, in particular, that the central singularity is resolved, being generally replaced with a regular Minkowski core, where the curvature tensor vanishes. Exploring cases with more general scale identifications, we further find that the space of quantum improved geometries is divided into two regions: one for geometries with a regular Minkowski core and the other for those with a weak singularity at the center. At the boundary of the two regions, the geometry has either Minkowski-, de Sitter-, or anti-de Sitter core.