Graviton emission in the bulk by a simply rotating black hole
Graviton emission in the bulk by a simply rotating black hole
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DOI：
10.1103/physrevd.80.084016
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发表时间：
2009-06
影响因子：
5
通讯作者：
P. Kanti;H. Kodama;R. Konoplya;N. Pappas;A. Zhdenko
中科院分区：
文献类型：
--
作者：
P. Kanti;H. Kodama;R. Konoplya;N. Pappas;A. Zhdenko
在这项工作中，我们研究了张量型引力自由度的发射从一个高维的，简单的旋转黑洞的块。相应的场方程的解耦径向部分首先解析求解的限制，低能量发射粒子和低角动量的黑洞，以获得吸收概率。角向和径向方程，然后数值求解，分析和数值结果的比较表明，在低，中能区有很好的协议。通过使用我们精确的数值结果，我们计算的能量和角动量的排放率和它们的依赖性的时空参数，如额外的类空维度的数量和黑洞的角动量。特别注意的是，我们的结果的收敛在计算中考虑的模式的数量和多重引力子张量模式，对应于相同的角动量数。
In this work, we study the emission of tensor-type gravitational degrees of freedom from a higher-dimensional, simply rotating black hole in the bulk. The decoupled radial part of the corresponding field equation is first solved analytically in the limit of low-energy emitted particles and low-angular momentum of the black hole in order to derive the absorption probability. Both the angular and radial equations are then solved numerically, and the comparison of the analytical and numerical results shows a very good agreement in the low and intermediate energy regimes. By using our exact, numerical results we compute the energy and angular-momentum emission rates and their dependence on the spacetime parameters such as the number of additional spacelike dimensions and the angular momentum of the black hole. Particular care is given to the convergence of our results in terms of the number of modes taken into account in the calculation and the multiplicity of graviton tensor modes that correspond to the same angular-momentum numbers.