论文标题
Schwarzschild Black Hole的灰体因子和带有弦云的扰动
Greybody factor and perturbation of a Schwarzschild black hole with string clouds and quintessence
论文作者
论文摘要
在本文中，我们研究了Dirac和Klein-Gordan方程，以及沉浸在精髓中的Schwarzschild Black Hole（SBH）的灰体因子，并与一连串的字符串相关。首先，我们使用纽曼·彭罗斯（NP）形式主义中的零四元进行了狄拉克方程。接下来，我们将狄拉克方程分为径向和角度集。使用径向方程，我们通过将径向运动的径向方程转换为标准的Schr％Ödinger波方程来研究有效电位的曲线。同样，我们研究了这个时空中的klein-gordan方程。米勒良好的转化方法用于计算玻色子的灰体因子。为了计算费米子的Gerybody因子，我们使用了半分析界限的一般方法。我们还研究了弦云和典型参数对鹰辐射的影响。根据结果，灰体因子受电势形状的强烈影响，这取决于模型参数。这与量子力学的思想一致。随着电势的上升，波浪渗透变得越来越困难。
In this paper, we investigated the Dirac and Klein-Gordan equations, as well as the greybody factor for a Schwarzschild black hole (SBH) immersed in quintessence and associated with a cloud of strings. Primarily, we study the Dirac equation using a null tetrad in the Newman- Penrose (NP) formalism. Next, we separate the Dirac equation into radial and angular sets. Using the radial equations, we study the profile of effective potential by transforming the radial equation of motion into standard Schr% ödinger wave equations form through tortoise coordinate. Similarly, we study the Klein-Gordan equation in this spacetime. The Miller-Good transformation method is employed to compute the greybody factor of bosons. To compute the Gerybody factor for fermions, we use the general method of semi-analytical bounds. We also investigate the effect of string clouds and quintessence parameters on Hawking radiation. According to the results, the greybody factor is strongly influenced by the shape of the potential, which is determined by the model parameters. This is consistent with the ideas of quantum mechanics; as the potential rises, it becomes harder for the wave to penetrate.
