论文标题
平面黑洞是理解弱重力猜想的途径
Planar Black Holes as a Route to Understanding the Weak Gravity Conjecture
论文作者
论文摘要
一个弱重力猜想的一种版本要求，极端黑洞应该有可能发出一个较小的黑洞：即原始的黑洞分叉。对于渐近平坦和渐近广告，带有球形事件范围的reissner-nordström黑洞，这种分叉降低了系统的总经典熵，因此显然被第二次热力学定律所禁止。很可能会考虑其他（例如量子杀人）效应来解决此问题，但是很难以定量的方式理解这一点。但是，对于具有\ emph {planar}事件视野的渐近广告Reissner-Nordström黑洞，可以表明分叉绝对与第二定律兼容。 （分叉产生的裸奇异品可能在这里起重要作用。）此外，在这种情况下，人们可以表现出一种详细的机制，可以准确地解释为什么当平面黑洞确实必须不稳定（通过麸皮下降时），而当它们足够接近极端时。因此，平面黑洞可以提高我们对WGC的理解。
One version of the Weak Gravity Conjecture requires that it should be possible for an extremal black hole to emit a smaller black hole: that is, the original black hole bifurcates. For asymptotically flat and asymptotically AdS Reissner-Nordström black holes with spherical event horizons, such a bifurcation reduces the total classical entropy of the system, and so it is apparently forbidden by the second law of thermodynamics. It may well be possible to remedy this by taking other (for example, quantum-gravitational) effects into account, but it is difficult to understand this in a quantitative way. In the case of asymptotically AdS Reissner-Nordström black holes with \emph{planar} event horizons, however, one can show that bifurcations are definitely compatible with the second law. (Naked singularities, generated by the bifurcation, may play an important role here.) Furthermore, in this case one can exhibit a detailed mechanism explaining precisely why planar black holes must indeed be unstable (through emission of branes) when they are sufficiently close to extremality. Thus planar black holes can improve our understanding of the WGC.
