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arXiv 2203.07594gr-qc
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拓扑亏损的大黄蜂引力中GUP修正黑洞的拟正规模和霍金辐射稀疏性

Quasinormal Modes and Hawking Radiation Sparsity of GUP corrected Black Holes in Bumblebee Gravity with Topological Defects

Dhruba Jyoti Gogoi, Umananda Dev Goswami

摘要:

我们得到了具有拓扑缺陷的大黄蜂引力中广义不确定原理(GUP)修正的de Sitter和反de Sitter黑洞解.用Padé平均六阶WKB近似方法计算了有效宇宙学常数为零和非零时的标量、电磁和引力准正规模。除此之外,所有三个扰动的时间演化进行了研究,并准正规模式计算使用的时域剖面。我们发现一阶和二阶GUP参数$α$和$β$分别对准正规模有相反的影响。研究还发现,全局扰动的存在可以显著降低系统的拟正态频率和衰减速率。另一方面,洛仑兹对称性破坏对准正规频率和衰变率有明显的影响。我们研究了有效宇宙学常数为零的黑洞在这三种扰动下的灰体因子、功率谱和稀疏性。Lorentz对称性破缺的存在和GUP参数$α$减小,而其他GUP参数$β$和整体扰动的存在增加了霍金辐射到达空间无穷远的几率.洛伦兹破坏的存在可以使黑洞的稀疏性降低,而整体破坏的存在可以增加黑洞的稀疏性。此外,我们已经看到,黑洞面积量子化规则被洛伦兹对称性破缺的存在所修改。

英文摘要:

We have obtained the Generalized Uncertainty Principle (GUP) corrected de Sitter and anti-de Sitter black hole solutions in bumblebee gravity with a topological defect. We have calculated the scalar, electromagnetic and gravitational quasinormal modes for the both vanishing and non-vanishing effective cosmological constant using Padé averaged sixth order WKB approximation method. Apart from this, the time evolutions for all three perturbations are studied, and quasinormal modes are calculated using the time domain profile. We found that the first order and second order GUP parameters $α$ and $β$, respectively have opposite impacts on the quasinormal modes. The study also finds that the presence of a global monopole can decrease the quasinormal frequencies and the decay rate significantly. On the other hand, Lorentz symmetry violation has noticeable impacts on the quasinormal frequencies and the decay rate. We have studied the greybody factors, power spectrum and sparsity of the black hole with the vanishing effective cosmological constant for all the three perturbations. The presence of Lorentz symmetry breaking and the GUP parameter $α$ decrease, while other GUP parameter $β$ and the presence of global monopole increase the probability of Hawking radiation to reach the spatial infinity. The presence of Lorentz violation can make the black holes less sparse, while the presence of a global monopole can increase the sparsity of the black holes. Moreover, we have seen that the black hole area quantization rule is modified by the presence of Lorentz symmetry breaking.

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