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arXiv 2603.23680gr-qcastro-ph.HE
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旋转的GUP黑洞:度规、阴影及量子参数边界

A rotating GUP black hole: metric, shadow, and bounds on quantum parameters

University of Alberta(阿尔伯塔大学);York University(约克大学);Perimeter Institute for Theoretical Physics(理论物理前沿研究所)

Federica Fragomeno, Samantha Hergott, Saeed Rastgoo, Evan Vienneau

AI总结:

通过修改Newman-Janis算法导出旋转GUP黑洞度规,分析其视界、温度、熵及奇点,并利用M87*和Sgr A*的阴影数据约束量子参数。

摘要:

最近,首次推导出了静态球对称广义不确定性原理启发的量子黑洞的度规。我们将修改后的Newman-Janis算法应用于该度规,并推导出其旋转对应物。我们证明该度规具有所有正确的极限,但由于Newman-Janis副作用,在静态情况下被解决的奇点被重新引入模型中。然而,该黑洞的慢旋转极限是无奇点的。此外,我们表明量子参数的存在改变了黑洞视界、温度和熵的位置,并允许裸奇点的存在,即使自旋参数与黑洞质量之比小于1。最后,通过计算该黑洞的阴影参数,并将其与事件视界望远镜对M87*和Sgr A*的观测数据进行比较,我们设定了模型中一个量子参数的边界,并表明如果该模型有效,则M87*的角动量存在一个上限。

英文摘要:

Recently, for the first time, a metric of a static spherically symmetric generalized uncertainty inspired quantum black hole was derived. We apply the modified Newman-Janis algorithm to this metric and derive its rotating counterpart. We show that this metric has all the correct limits, while due to Newman-Janis side effects, the singularity which was resolved in the static case, is introduced back into the model. However, the slowly-rotating limit of this black hole is singularity-free. Furthermore, we show that the presence of quantum parameters modifies the location of the horizons, temperature, and entropy of the black hole, and allows the existence of naked singularities even if the ratio of the spin parameter to mass of the black hole is less than unity. Finally, by computing the shadow parameters of this black hole and comparing them with data from the Event Horizon Telescope for both M87* and Sgr A*, we set bounds on one of the quantum parameters of the model, and show that there is a limit on the angular momentum of M87* if this model is valid.

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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