Cosmic Censorship Conjecture in Kerr-Sen Black Hole
Cosmic Censorship Conjecture in Kerr-Sen Black Hole
复制标题
DOI：
10.1103/physrevd.95.124050
复制
发表时间：
2016-11
影响因子：
5
通讯作者：
Bogeun Gwak
中科院分区：
文献类型：
--
作者：
Bogeun Gwak
利用带电粒子吸收研究了Kerr-Sen黑洞的宇宙监督猜想的有效性，该猜想是四维杂化弦理论的低能有效场论的一个解.当黑洞吸收粒子时，由于粒子的守恒量，其上的电荷发生变化。黑洞的变化受粒子运动方程的约束，并且与热力学定律相一致。粒子的吸收使克尔森黑洞的质量增加到超过所吸收的电荷（如角动量和电荷）的质量;因此，黑洞不会被过度充电。在近极值黑洞中，我们观察到一阶膨胀角动量和二阶膨胀电荷对宇宙监督猜想的违反。然而，考虑到绝热过程携带的守恒量的黑洞，我们证明了黑洞视界的稳定性。因此，我们解决违规行为。这符合热力学第三定律。
The validity of the cosmic censorship conjecture for the Kerr-Sen black hole, which is a solution to the low-energy effective field theory for four-dimensional heterotic string theory, is investigated using charged particle absorption. When the black hole absorbs the particle, the charge on it changes owing to the conserved quantities of the particle. Changes in the black hole are constrained to the equation for the motion of the particle and are consistent with the laws of thermodynamics. Particle absorption increases the mass of the Kerr-Sen black hole to more than that of the absorbed charges such as angular momentum and electric charge; hence, the black hole cannot be overcharged. In the near-extremal black hole, we observe a violation of the cosmic censorship conjecture for the angular momentum in the first order of expansion and the electric charge in the second order. However, considering an adiabatic process carrying the conserved quantities as those of the black hole, we prove the stability of the black hole horizon. Thus, we resolve the violation. This is consistent with the third law of thermodynamics.