标题： 在2+1维中过充电荷的标量场黑洞趋向于极端情况及超越极端情况 显示英文标题

标题： Overcharging dilaton black holes in 2+1 dimensions to extremality and beyond

摘要： 我们检验了2+1维的静态带电标量场黑洞是否可以通过从无穷远处发送试验粒子而转变为裸奇点。我们得出结论，过充电对于极端和近极端黑洞都是可能且普遍存在的。我们的分析还表明，与Ban̆ados-Teitelboim-Zanelli、Kerr和Reissner-Nordström黑洞不同，近极端带电标量场黑洞可以被连续驱动至极端状态及更进一步的状态，而不是通过离散跳跃而被超旋转或过充电。因此，在2+1维带电标量场黑洞与试验粒子的相互作用中，宇宙监督猜想的弱形式以及黑洞热力学的第三定律均被违反。我们还推导出，在从黑洞到裸奇点的转变过程中，不存在热量容量消失或发散的点。可能导致阻止裸奇点形成的相变并未发生。 显示英文摘要

摘要： We test whether static charged dilaton black holes in 2+1 dimensions can be turned into naked singularities, by sending in test particles from infinity. We derive that overcharging is possible and generic for both extremal and nearly extremal black holes. Our analysis also imply that nearly extremal charged dilaton black holes can be continuously driven to extremality and beyond, unlike nearly extremal Ba\u{n}ados-Teitelboim-Zanelli, Kerr and Reissner-Nordstr\"{o}m black holes which are overspun or overcharged by a discrete jump. Thus the weak form of the cosmic censorship conjecture and the third law of black hole thermodynamics are both violated in the interaction of charged dilaton black holes in 2+1 dimensions, with test particles. We also derive that there exists no points where the heat capacity vanishes or diverges in the transition from black holes to naked singularities. The phase transitions that could potentially prevent the formation of naked singularities do not occur.