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arXiv 2210.02253gr-qcastro-ph.CO
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量子奥本海默-斯奈德和瑞士奶酪模型

Quantum Oppenheimer-Snyder and Swiss Cheese models

Jerzy Lewandowski, Yongge Ma, Jinsong Yang, Cong Zhang

摘要:

考虑圈量子宇宙学中的量子Oppenheimer-Snyder模型,导出了一个新的量子黑洞模型,其度规张量是适当变形的Schwarzschild张量.量子效应意味着由坍缩的尘埃球产生的黑洞的质量有一个下限。在质量较大的情况下,事件视界确实形成,时空的最大扩张及其性质进行了研究。通过讨论与量子Oppenheimer-Snyder相反的情形,得到了一个被量子宇宙包围的气泡的量子瑞士奶酪模型。这个模型类似于黑洞宇宙学或多产宇宙,其中大爆炸与白洞有关。因此,我们的模型打开了一个新的窗口,宇宙学现象。

英文摘要:

By considering the quantum Oppenheimer-Snyder model in loop quantum cosmology, a new quantum black hole model whose metric tensor is a suitably deformed Schwarzschild one is derived. The quantum effects imply a lower bound on the mass of the black hole produced by the collapsing dust ball. For the case of larger masses where the event horizon does form, the maximal extension of the spacetime and its properties are investigated. By discussing the opposite scenario to the quantum Oppenheimer-Snyder, a quantum Swiss Cheese model is obtained with a bubble surrounded by the quantum universe. This model is analogous to black hole cosmology or fecund universes where the big bang is related to a white hole. Thus our models open a new window to cosmological phenomenology.

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。

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