论文标题
测试极端磁化的Kerr-Newman黑洞的弱宇宙审查制度猜想
Testing the weak cosmic censorship conjecture for extremal magnetized Kerr-Newman black holes
论文作者
论文摘要
我们通过注入测试粒子的方法测试了磁化kerr-newman时空的弱宇宙审查猜想。因此，我们需要知道当测试粒子进入地平线时，黑洞的参数如何变化。对于非质量平坦的空间来说，这是一个尚未解决的问题，因为黑洞和颗粒的能量上存在歧义。我们找到了一种解决问题的新方法。我们从第一定律的“物理过程版本”开始，将粒子的参数与黑洞区域的变化联系起来。通过将第一定律与通常的黑洞热力学的第一定律进行比较，我们重新定义了粒子的能量，使能量可以与黑洞的质量参数匹配。然后，我们表明，在带电的测试粒子掉入后，极端磁化的Kerr-Newman黑洞的地平线可能会破坏，这可能导致违反弱宇宙审查的猜想。我们还发现，此过程的允许参数范围很小，这表明在考虑了自我强制和辐射效应之后，弱宇宙审查的猜想仍然可以有效。与没有磁场的情况相反，粒子在无穷大时不能释放以破坏地平线。在弱磁场的情况下，随着磁场的增加，释放点变得更接近地平线。这表明磁场使对宇宙审查制度的侵犯更加困难。最后，通过将我们的新方法应用于Kerr-Newman-DS（ADS）黑洞，该黑洞是众所周知的非含量平坦的空间，我们获得了与黑洞的质量参数相匹配的粒子能量的表达。
We test the weak cosmic censorship conjecture for magnetized Kerr-Newman spacetime via the method of injecting a test particle. Hence, we need to know how the black hole's parameters change when a test particle enters the horizon. This was an unresolved issue for non-asymptotically flat spacetimes since there are ambiguities on the energies of black holes and particles. We find a novel approach to solve the problem. We start with the "physical process version" of the first law, which relates the particle's parameters with the change in the area of the black hole. By comparing this first law with the usual first law of black hole thermodynamics, we redefine the particle's energy such that the energy can match the mass parameter of the black hole. Then, we show that the horizon of the extremal magnetized Kerr-Newman black hole could be destroyed after a charged test particle falls in, which leads to a possible violation of the weak cosmic censorship conjecture. We also find that the allowed parameter range for this process is very small, which indicates that after the self-force and radiation effects are taken into account, the weak cosmic censorship conjecture could still be valid. In contrast to the case where the magnetic field is absent, the particle cannot be released at infinity to destroy the horizon. And in the case of a weak magnetic field, the releasing point becomes closer to the horizon as the magnetic field increases. This indicates that the magnetic field makes the violation of the cosmic censorship more difficult. Finally, by applying our new method to Kerr-Newman-dS (AdS) black holes, which are well-known non-asymptotically flat spacetimes, we obtain the expression of the particle's energy which matches the black hole's mass parameter.
