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arXiv 2005.14241gr-qcastro-ph.HEhep-th
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极端旋转中性白洞的Super-Penrose过程

Super-Penrose process for extremal rotating neutral white holes

O. B. Zaslavskii

摘要:

我们考虑两个粒子1和2在极端旋转轴对称中性一般黑洞视界附近碰撞产生粒子3和4。我们讨论的情况下,粒子3和4都落入一个黑洞和白洞区域中移动。如果粒子1被微调,质心处的能量$E_{c.m.}$将无限增长(巴尼亚多斯-西尔克-韦斯特效应)。那么,粒子3原则上可以到达另一个宇宙中的平坦无穷大。如果不仅$E_{c.m.}$是无界的,而且相应的Killing能$E$也是无界的,则这给出了所谓的超彭罗斯过程(SPP)。我们证明了SPP\确实是可能的。因此,白洞被证明是从一个宇宙转移到另一个宇宙的高能量通量的潜在来源。这推广了Patil和Harada最近对Kerr度规的观测。我们分析了两个不同的制度,在不同的尺度上的过程。

英文摘要:

We consider collision of two particles 1 and 2 near the horizon of the extremal rotating axially symmetric neutral generic black hole producing particles 3 and 4. We discuss the scenario in which both particles 3 and 4 fall into a black hole and move in a white hole region. If particle 1 is fine-tuned, the energy $E_{c.m.}$ in the centre of mass grows unbounded (the Bañados-Silk-West effect). Then, particle 3 \ can, in principle, reach a flat infinity in another universe. If not only $E_{c.m.}$ but also the corresponding Killing energy $E$ is unbounded, this gives a so-called super-Penrose process (SPP). We show that the SPP\ is indeed possible. Thus white holes turn out to be potential sources of high energy fluxes that transfers from one universe to another. This generalizes recent observaitons made by Patil and Harada for the Kerr metric. We analyze two different regimes of the process on different scales.

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