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arXiv 2009.06330gr-qcastro-ph.HEhep-th
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Schwarzschild内部物质吸积与半经典反弹

Matter accretion versus semiclassical bounce in Schwarzschild interior

K. A. Bronnikov, S. V. Bolokhov, M. V. Skvortsova

摘要:

我们讨论了以前构建的模型的史瓦西黑洞内部的奇异性被取代的定期反弹,最终导致一个白洞的属性。该模型本质上是半经典的,并使用对应于量子场真空极化的有效应力-能量张量(SET)作为引力源,最小球半径比普朗克长度大几个数量级,因此量子引力的影响仍然可以忽略不计。我们估计的其他量子贡献的有效SET,所造成的非平凡的拓扑结构的空间部分和粒子生产从真空由于非平稳的引力场,并表明这些贡献是微不足道的小相比,SET由于真空极化。对于诸如不同种类的物质吸积到黑洞中以及它进一步运动到可能的奇点等经典现象,也是如此。因此,在一个明确的意义上,我们的模型的半经典反弹,而不是史瓦西奇点是稳定的量子和经典扰动。

英文摘要:

We discuss the properties of the previously constructed model of a Schwarzschild black hole interior where the singularity is replaced by a regular bounce, ultimately leading to a white hole. The model is semiclassical in nature and uses as a source of gravity the effective stress-energy tensor (SET) corresponding to vacuum polarization of quantum fields, and a minimum spherical radius is a few orders of magnitude larger than the Planck length, so that the effects of quantum gravity should be still negligible. We estimate the other quantum contributions to the effective SET, caused by a nontrivial topology of spatial sections and particle production from vacuum due to a nonstationary gravitational field and show that these contributions are negligibly small as compared to the SET due to vacuum polarization. The same is shown for such classical phenomena as accretion of different kinds of matter to the black hole and its further motion to the would-be singularity. Thus, in a clear sense, our model of a semiclassical bounce instead of a Schwarzschild singularity is stable under both quantum and classical perturbations.

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