Quantum evolution of Schwarzschild-de Sitter (Nariai) black holes
Quantum evolution of Schwarzschild-de Sitter (Nariai) black holes
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DOI：
10.1103/physrevd.59.044026
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发表时间：
1998-04
影响因子：
5
通讯作者：
S. Nojiri;S. Odintsov
中科院分区：
文献类型：
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作者：
S. Nojiri;S. Odintsov
我们计算了共形物质（标量、旋量和矢量）在球对称背景下的单环有效作用。这种有效作用（在大N近似和曲率上展开）被用于研究近简并极限（Nariai BH）下Schwarzschild\char21{}de Sitter （sd）黑洞（BHs）的量子方面。根据Bousso和Hawking最近对最小标量的观测，我们证明了对于上述所有类型的物质，SdS - BHs可能会蒸发或反蒸发。对SdS - BHs在蒸发和反蒸发状态下的能量流进行了评述。对无边界条件的研究表明，该条件支持成核黑洞的反蒸发（至少在我们的近似框架内是这样）。这表明，有可能某些粒子对创造的宇宙黑洞不仅会蒸发，还会反蒸发。因此，宇宙原始黑洞的存在时间可能比预期的要长得多。
We calculate the one-loop effective action for conformal matter (scalars, spinors, and vectors) on spherically symmetric background. Such an effective action (in the large N approximation and expansion on curvature) is used to study quantum aspects of Schwarzschild\char21{}de Sitter (SdS) black holes (BHs) in the nearly degenerated limit (Nariai BH). We show that for all types of the above matter SdS BHs may evaporate or antievaporate in accordance with a recent observation by Bousso and Hawking for minimal scalars. Some remarks about the energy flow for SdS BHs in the regime of evaporation or antievaporation are also made. The study of the no boundary condition shows that this condition supports antievaporation for nucleated BHs (at least in the frame of our approximation). That indicates the possibility that some pair created cosmological BHs may not only evaporate but also antievaporate. Hence cosmological primordial BHs may survive much longer than expected.