论文标题
Greybody因素典型的Kerr-Newman Black Hole
Greybody Factor for Quintessential Kerr-Newman Black Hole
论文作者
论文摘要
在本文中，我们在典型场的存在下为Kerr-Newman Black Hole的灰体因子制定了分析表达。首先，我们通过将径向运动方程转换为标准的Schr $ \ ddot {o} $ dinger形式来分析有效电位的轮廓。以高几何函数的形式计算出两种渐近溶液在不同的径向区域（例如黑洞和宇宙学范围）计算的。为了扩展整个径向状态的活力，我们使用半古典方法在中间区域平滑地匹配分析溶液。我们还计算了无质量标量场的排放率和吸收横截面，以详细说明结果的重要性。发现电磁力以及黑洞的重力最大化的有效潜力，因此减少了标量场颗粒的发射过程。
In this paper, we formulate an analytic expression of the greybody factor for the Kerr-Newman black hole in the presence of the quintessential field. Primarily, we analyze the profile of effective potential by transforming the radial equation of motion into standard Schr$\ddot{o}$dinger form through tortoise coordinate. The two asymptotic solutions, in the form of hypergeometric functions, are computed at distinct radial regions such as a black hole and cosmological horizons determined by the quintessence. To extend the viability over the whole radial regime, we match the analytical solutions smoothly in an intermediate region by using a semi-classical approach. We also calculate the emission rates and absorption cross-section for the massless scalar fields to elaborate on the significance of our result. It is found that the electromagnetic force together with the gravitational pull of the black hole maximizes the effective potential and consequently, decreases the emission process of scalar field particles.
