Gwak Bogeun
Department of Physics and Astronomy, Sejong University, Seoul 05006, Korea.
Entropy (Basel). 2018 Nov 7;20(11):855. doi: 10.3390/e20110855.
We investigate the laws of thermodynamics and the validity of the cosmic censorship conjecture in the Kerr-Newman-de Sitter black hole under charged particle absorption. Here, the black hole undergoes infinitesimal changes because of the momenta carried by the particle entering it. The cosmic censorship conjecture is tested by whether the black hole can be overcharged beyond the extremal condition under absorption. The changes in the black hole violate the second law of thermodynamics. Furthermore, this is related to the cosmic censorship conjecture. To resolve this violation, we impose a reference energy of the particle at the asymptotic region based on the first law of thermodynamics. Under imposition of the reference energy, the absorption satisfies the laws of thermodynamics, and the extremal black hole cannot be overcharged. Thus, the cosmic censorship conjecture is valid under the absorption.
我们研究了在带电粒子吸收情况下克尔 - 纽曼 - 德西特黑洞中的热力学定律以及宇宙监督猜想的有效性。在此，由于进入黑洞的粒子携带的动量，黑洞会经历微小变化。通过吸收过程中黑洞是否能被充电超过极端条件来检验宇宙监督猜想。黑洞的这些变化违反了热力学第二定律。此外，这与宇宙监督猜想相关。为了解决这种违反情况，我们基于热力学第一定律在渐近区域施加粒子的参考能量。在施加参考能量后，吸收过程满足热力学定律，并且极端黑洞不会被过度充电。因此，在吸收情况下宇宙监督猜想是有效的。
